Date   

New ASCOM Platform 6.5 Testing

Jerry Hubbell - Explore Scientific VP Engineering
 

I have been testing the new ASCOM platform version 6.5 over the past couple of months and recently installed it on our observatory computer and tested it successfully. I have also used the new ASCOM Device Hub in place of the ASCOM POTH hub and it works fine. There are significant improvements to this hub as compared to POTH. Here is a screenshot of our observatory computer system showing the Device Hub interface.


--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


locked Re: #EXOS2 #EXOS2

Jerry Hubbell - Explore Scientific VP Engineering
 
Edited

On Wed, May 13, 2020 at 10:18 PM, <xaero1982@...> wrote:

i have the same issue and I think the answer from Eric doesnt really helps.

Someone else get this combination working? Exos2 PMC8 + Mgen3?

Hi xaero1982,

The original message mentioned using ExploreStars with ASCOM and everyone must understand that ExploreStars is a standalone application that is wireless UDP/IP only. You can use the ASCOM driver wired/Serial or Wifi/TCP/IP.  Only one or the other. Search for information on the forum about using the PMC-Eight Configuration Manager to switch communications modes.

As far as using the ST4 port, we always suggest to our customers to take advantage of the ASCOM Pulse Guiding function versus using the legacy ST4 port and cable. It eliminates the ST4 cable and performs better with PHD2 If you still prefer to use the ST4 port and cable, it will require a custom camera guide port calibration which is installed in a customer version of the PMC-Eight firmware. If you can perform the procedure to acquire the calibration data, I can create a custom firmware for him to use the camera.  You can find the procedure in the PMC-Eight Programmer's Reference on page 50

http://02d3287.netsolhost.com/pmc-eight/PMC_Eight_ProgrammersReferenceManual_Release2_2019_March_07.pdf

Send the data to my email listed below.
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: Threaded bar securing mount to tripod )EXOS2-PMC8

duker@...
 

Ah, with a bit of help from vise grips I was able to remove it. Not so tight next time.
Thanks


Threaded bar securing mount to tripod )EXOS2-PMC8

duker@...
 

Okay, new owner of a EXOS-PMC8 mount. I have threaded he bar to secure the mount to the tripod, but I think I missed the step where it should be aligned for alignment.

In any event, I need to remove the mount again, and I just cannot seem to unthread the bar. Lefty loosy right?
The black handle on the bottom of the thread wants to come off and the bar won;t budge?

Any suggestion is really appreciated.


Re: A question on exosgt2 with qhy polemaster

Robert Parks
 

Keven there is also a little checkbox in the POTH setup for "motion controls" that I believe you must check.
--
Robert Scott Parks - Northwest Arkansas, USA

Mount: Explore Scientific EXOS II GT WITH PMC-8
Polar Finder: EXOS II integrated with illuminated reticle
Telescope: Explore Scientific 127mm f/7.5 FCD1 Air-Spaced Triplet ED APO Refractor
Finder: Telrad
Hardware: Samsung Galaxy Tab A 7", Dell Venue 10 Pro 32bit OS, Samsung Galaxy S20+
Steering Software: ExploreStars App, ASCOM/POTH + StellariumScope/Stellarium + Wifi Scope + SkySafari Pro


Re: A question on exosgt2 with qhy polemaster

Jeff Snell
 

Awesome Kevin!  Nice to know I can help out rather than always being helped😆


On May 12, 2020, at 7:07 PM, Kevin Rea <reakevinscott@...> wrote:

Thanks Jeff, the CDC worked very nicely for moving the mount east and west.


Re: A question on exosgt2 with qhy polemaster

Chris Tardif
 


--
Mounts: Explore Scientific IEXOS-100 w Celestron CG5 tripod, iOptron CEM 40
Scopes: Explore Scientific FCD-100 ED-102CF, Various Canon lenses, ZWO mini-guidescope, StarField 60mm guide-scope.
CameraASI120MM Mini (mono), Altair GPCAM 130
Control PC: Intel NUC
Loc: 44 -79


Re: A question on exosgt2 with qhy polemaster

Kevin Rea <reakevinscott@...>
 

Also, 
What version of path are you using? My version does not have that little directional pad in it...
Kevin


Re: A question on exosgt2 with qhy polemaster

Kevin Rea <reakevinscott@...>
 

Hi Chris, if the poth direction mover for the scope you're talking about is the ascom pad, I was using that for quite a while but it quit working.

Kevin


Re: A question on exosgt2 with qhy polemaster

Kevin Rea <reakevinscott@...>
 

Thanks Jeff, the CDC worked very nicely for moving the mount east and west.


Re: EXOS 2 GT Payload Capacity

Chris Tardif
 

You're absolutely right.  Another thing that doesn't get much air play is the height of the OTA.  The higher the OTA (further it is from the fulcrum because really this is just a lever) the more "weight" and less capacity.  

The guy on Ben's Astrophotography exceeds the weight limit of his mount and still gets great results.  So as Jerry said, your mileage may vary and I also like what Kent said a while back on another thread..."I can't advise you to drive above the speed limit" or something to that effect.

Chris

--
Mounts: Explore Scientific IEXOS-100 w Celestron CG5 tripod, iOptron CEM 40
Scopes: Explore Scientific FCD-100 ED-102CF, Various Canon lenses, ZWO mini-guidescope, StarField 60mm guide-scope.
CameraASI120MM Mini (mono), Altair GPCAM 130
Control PC: Intel NUC
Loc: 44 -79


Re: EXOS 2 GT Payload Capacity

Tony
 

I dont mean to sidetrack the OP's concerns, but I was just curious why the discrepancy on payload capacity depending on who or even where you read it from.  I've seen ES rate it at 40 lbs visual and 28 lbs AP (70% rule).  And I've also seen it rated at 28 lbs visual and 20 lbs AP (71.42857% rule doesn't have the same ring).  What is ES's official stance since I've seen them state it both ways?

I dont think anyone actually expects the mount to function well with 40 lbs even for visual.  I also dont think any of these limits are hard and fast rules, but more of a sliding scale.  The further you try to push it, the more error you will introduce.  Personally, I'm pushing my luck and am awaiting delivery of a nearly identical setup as Mr. Vince White.  I dont expect to get anywhere near his accuracy without both an exceptional amount of work (which I can do), and an exceptional amount of luck (which I don't have).  I calculate my weight will be 25.15 lbs, which is either well within, or well outside the generally accepted payload capacity, depending on the source.  Still I feel there are just too many variables in play to say this will either work or wont work.  So much will come down to proper setup, balancing, lubrication, gear mesh, perhaps bearing preload, or any of a couple dozen other minor tweaks.  And that's to say nothing of the weather.

Good luck to you Jeff, I hope its something as simple as recalibrating PHD2.  If not, maybe just start checking the obvious mechanicals, unwanted play or sticky points.  I'm sure youll get it dialed in soon enough.   


Re: EXOS 2 GT Payload Capacity

Jeff Snell
 

Jerry/Bob/Chris/Steve,
Thanks so much for the info (and the encouragement).  Wow.  I will dive in and start seeing what sense I can make of your great advice and technical prowess.  I have to admit that the enjoyment slips a bit when you have to break into things that you don't understand.  I've really only been doing the astro-photography since last fall and the visual since Jan '19.  My greatest fear is that I'll irreparably break something (mechanical, setting or code).  I am not an engineer, and I did not stay at a Holiday Inn last night.  I do however work everyday with about 15 engineers of all flavors and they all have the same thing in common...they love to tinker and they are perfectionists.  Whether it's tuning a mount, adjusting settings in programs or trying to understand the basics of Photoshop, I am an unarmed man.  I'm getting better but still unarmed.

However, the rewards I've reaped thus far from seeing the result of my work with the smaller ES ED 80 APO has kept me going and I do not intend to give up.  I understand to get good at this requires a lot of work.  I am under no illusion regarding the intricacies and technical aspects of this hobby as well as the need to keep at it.  One must immerse.  I just need to find the energy to immerse after a long day at work, three kids to keep up with, up late at night with a telescope and camera, and back at it again the next day.

In short, I will "endeavor to persevere" (name that movie).  I'll take a look at some of the things you point out and report back ASAP.  Thanks for being willing to help out as I work to get the most out of the mount and the PMC-Eight.

Jeff

PMC-Eight w/Explore Stars
EXOS 2 GT
ES ED80mm APO
Celestron 8" Edge HD
Canon Ti-5 w/ Spencer Camera Astro-mod


On Tue, May 12, 2020 at 7:40 AM Robert Hoskin <devonshire@...> wrote:
Jeff,
 
When I first got my EXOS2, I expected to take it out of the box, do the necessary software and communications integration, and then everything would 'just work'.  Took me a while to recalibrate, because things are NOT that simple and yes, to Vince's point, it can be a long journey that requires a number of steps.
 
Some things to think about:
 
> Jerry mentioned PHD2 logs, and you mentioned screen shots afterwards.  Two different things.  PHD2 creates a log directory (on my Win7, it's under My Documents, not sure where if you're on win10).  while a screen shot is an interesting point-in-time look, logs carry more data, so they're more useful. When you do a session that you want looked at, don't start and stop every couple of minutes - let it run for a while - 10, 20 minutes at a minimum - long enough to for any regular behaviors to start showing up.  Just zip up the relevant log(s) and attach to a post.
 
> Check to make sure that your mount head, with its additional payload, cannot shift or wobble against the tripod head while in use.  All that holds it secure is the downward pull from the chrome rod.   Section 5 in my tuning doc covers this, but basically, make sure that chrome rod is screwed securely into the mount head's base and that the spacer ring is installed. Make sure that the aluminum nut is snugged *tight*, that the eyepiece tray tightens down horizontal and not tipped, and that the aluminum nut does not loosen as your session progresses.  
 
> Consider your balance.  Some members here get along ok with even balancing, but my (13lb) setup does not. It tracks better biased East-heavy (tracking always lifting weight, never lowering), and camera-heavy.  Something to try.
 
Hope this helps, and don't give up. :-)
 
- Bob
 
--
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


New Forum Milestone - 400 Members Strong!! #ExploreScientific #NEWS

Jerry Hubbell - Explore Scientific VP Engineering
 

I wanted to announce that this morning the PMC-Eight MAIN forum has passed the 400 member milestone! 

I wanted to take this opportunity to welcome all the new members who have joined over the past few months since we passed our 300 member milestone.  I think we are on track to exceed 500 members by the end of August 2020. We have actually had more members join but we always have a few leave every month so the number of current members will go up and then sometimes go down. For example over the past month we have had 9 members leave the MAIN forum. In total, since the inception of the forum, we have had 85 members leave the MAIN forum.

Thanks again for joining us and I hope you have a great experience here.
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!


Re: EXOS 2 GT Payload Capacity

 

Jeff,
 
When I first got my EXOS2, I expected to take it out of the box, do the necessary software and communications integration, and then everything would 'just work'.  Took me a while to recalibrate, because things are NOT that simple and yes, to Vince's point, it can be a long journey that requires a number of steps.
 
Some things to think about:
 
> Jerry mentioned PHD2 logs, and you mentioned screen shots afterwards.  Two different things.  PHD2 creates a log directory (on my Win7, it's under My Documents, not sure where if you're on win10).  while a screen shot is an interesting point-in-time look, logs carry more data, so they're more useful. When you do a session that you want looked at, don't start and stop every couple of minutes - let it run for a while - 10, 20 minutes at a minimum - long enough to for any regular behaviors to start showing up.  Just zip up the relevant log(s) and attach to a post.
 
> Check to make sure that your mount head, with its additional payload, cannot shift or wobble against the tripod head while in use.  All that holds it secure is the downward pull from the chrome rod.   Section 5 in my tuning doc covers this, but basically, make sure that chrome rod is screwed securely into the mount head's base and that the spacer ring is installed. Make sure that the aluminum nut is snugged *tight*, that the eyepiece tray tightens down horizontal and not tipped, and that the aluminum nut does not loosen as your session progresses.  
 
> Consider your balance.  Some members here get along ok with even balancing, but my (13lb) setup does not. It tracks better biased East-heavy (tracking always lifting weight, never lowering), and camera-heavy.  Something to try.
 
Hope this helps, and don't give up. :-)
 
- Bob
 
--
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2 290M
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


Re: A question on exosgt2 with qhy polemaster

Chris Tardif
 

I seem to remember that as well.   I plate-solve now so I don't botter with manually moving it.  There is a mount panel in POTH you might try:



Also...Plate solving will change your life and you can build it into APT.  Install ASPS then it will magically find the target and put it dead center.  No manul slew or star alignment ever again.



--
Mounts: Explore Scientific IEXOS-100 w Celestron CG5 tripod, iOptron CEM 40
Scopes: Explore Scientific FCD-100 ED-102CF, Various Canon lenses, ZWO mini-guidescope, StarField 60mm guide-scope.
CameraASI120MM Mini (mono), Altair GPCAM 130
Control PC: Intel NUC
Loc: 44 -79


Re: EXOS 2 GT Payload Capacity

Vince White
 

FYI, as a data-point, on a clear, calm night and when I do my part, I can get from 0.6 - 0.8 arc-sec total RMS error (10 minute exposures) with about 25lbs (heavy newt + camera + guide scope & camera + cables) on my PMC8 Exos2-GT.  It's also been a long journey to get to this point and even then, I can have a bad night with 2+ arc-sec RMS error.

Regards,
Vince
--
Mount: ES PMC-8 EXOS2-GT
Scopes: BRESSER 208mm f/3.9 Newt + ES HR Coma Corrector, Celestron C90 Mak, generic 50/191mm guide scope
Cameras:  Canon EOS RP, T7C (ZWO ASI120MC clone)
Misc: 2" Optolong UHC & L-eNhance filter, Raspberry PI 4
Software: INDI + Kstars + EKOS, DeepSkyStacker, GIMP, Lightroom, Photoshop, Sirl


Re: EXOS 2 GT Payload Capacity

Steve Siedentop
 

Jeff -

The PHD2 Guiding Assistant will calculate appropriate values for the parameters Jerry enumerated and it’s probably the quickest route from point A to point B.

However, it’s important to understand what goes on under the hood so you can get yourself out of a hole when things don’t operate as they should.

I imaged with a C8 on a Celestron CG5 many moons ago.  With some TLC, your EXOS 2 will image with the Edge HD.  However, you’ll likely find that doing so will challenge your current level of expertise.

I’m looking forward to seeing what you can get out of this combination!

-Steve
--
Mounts: ES PMC-8 G11 with Ruland Couplers and One Piece Worm Blocks, Skywatcher NEQ-6
Scopes: ES ED127CF FCD100, Orion 6” Mak, Stellarvue SV80EDT, Coronado Solarmax 40
Cameras:  CentralDS CDS-600, CentralDS Astro 60D, Orion Starshoot SSAG
Msc: Moonlite Focusers, Astrozap Dew Straps, Pegasus Ultimate PowerBox
Software: PixInsight, Cartes du Ciel, BackyardEOS, SkySafari


Re: EXOS 2 GT Payload Capacity

Chris Tardif
 

Shift click on the green icon button and it will recalibrate.  That took me hours to figure out the first time.


--
Mounts: Explore Scientific IEXOS-100 w Celestron CG5 tripod, iOptron CEM 40
Scopes: Explore Scientific FCD-100 ED-102CF, Various Canon lenses, ZWO mini-guidescope, StarField 60mm guide-scope.
CameraASI120MM Mini (mono), Altair GPCAM 130
Control PC: Intel NUC
Loc: 44 -79


Re: EXOS 2 GT Payload Capacity

Jerry Hubbell - Explore Scientific VP Engineering
 

On Mon, May 11, 2020 at 08:25 PM, Jeff Snell wrote:
Is there obvious drop down or button in PHD2 that allows some way to "retune" for the heavier gear? 
Hi Jeff,

The adjustments or "tuning" I was talking about involve various parameters in PHD2 that are adjustable. I assumed, perhaps wrongly, that you were familiar with these. Here is an excerpt from the PHD Guiding 2 help file. This is just a small sampling of the information about how to get the best performance out of your EXOS 2 mount using PHD2.

Although my comments involve PHD2 and not the PMC-Eight system directly, it is important to understand that the PMC-Eight EXOS 2 mount (and the iEXOS 100) is an inexpensive mount that can be as capable as a more expensive mount only through the application of skills and knowledge of the user. It does not perform at its peak unless the user has learned enough about the mount and its behavior under load. YMMV. 

Guide Algorithm Parameters

In PHD2, the various guide algorithms can be applied to either the right ascension or declination axes.  Most of these algorithms include a minimum move parameter.  This is used to avoid making guide corrections that are overly small, are unlikely to have any effect on star shape, and are mostly due to transient seeing effects.  These values are entered in units of pixels, so you need to think about them in the context of how large your star images are.  The default values work well for short-to-medium focal length systems, but you may need to increase them if you are working at long focal lengths and expect stars to have larger diameters.

The hysteresis algorithms keep a history of the guiding corrections that have been made in the recent past, and these are used to help compute the next guide correction.  The hysteresis parameter, expressed as a percentage, specifies the "weight" that should be given to this history as opposed to  looking only at the star deflection in the current guide frame.  Consider an example where the hysteresis parameter is 10%.  In that case, the next guiding correction will be 90% influenced by the star movement seen in the current guide frame and 10% by the corrections that have been made in the recent past.  Increasing the hysteresis value will smooth out the corrections at the risk of being too slow to react to a legitimate change in direction.  The hysteresis algorithms also include an aggressiveness parameter, again expressed as a percentage,  that is used to reduce over-correcting.   On each frame, PHD2 computes how far it thinks the mount should move and in what direction(s) it should move. The aggressivness parameter scales this. For example, take a case where the star deflection has been evaluated and a corrective move of 0.5 pixels is warranted.  If the aggressiveness is set to 100%, a guider command will be issued to move the mount the full 0.5 pixels.  But if the aggressiveness is set to 60%, the mount will be asked to move only 60% of that amount, or 0.3 pixels. If you find your mount is always overshooting the star, decrease this value slightly (say, by 10% steps). If you find PHD2 always seems to be lagging behind the star's motion, increase this by a little bit. A little can go a long way here. 
 
The ResistSwitch algorithm behaves much as its name implies.  Like the hysteresis algorithms, it also maintains a history of past guide corrections, and any change of direction must be "compelling" in order to issue a reversing guide command.  This is appropriate for declination guiding, where reversals in direction are both suspect and likely to trigger backlash in the gears.  For that reason, ResistSwitch is the default algorithm for declination but not for right ascension, where valid direction reversals are expected.  Starting with Release 2.4.1, two additional parameters are available for fine-tuning the ResistSwitch algorithm.  The first is "aggression", a percentage amount that controls how much of the computed guide correction will be issued.  Reducing this parameter can help to avoid over-shooting with mounts that have little or no backlash. The second parameter is a checkbox labeled "Fast switch for large deflections."  If this is checked, PHD2 will react immediately to a large change of direction rather than waiting for three consecutive deflections in the new direction, which is the normal behavior.  This can help to more quickly recover from large excursions in Dec, perhaps caused by wind, cable snags, or other mechanical shifts  The definition of a "large deflection" is 3x the minimum-move value.  So if PHD2 is over-reacting to direction changes, you can tune the behavior with the min-move parameter or disable the "fast switch" option altogether.  It is worth remembering that "less is usually better" when it comes to Dec guiding, so don't try to over-tune these parameters.

The LowPass algorithms also employ a history of recent guiding corrections in order to compute the next correction.  The starting point for the computed move is the median value of the guide star deflections that have occurred in recent history.  This means that the star deflection seen in the current guide frame has relatively little impact on calculating the next move and the algorithm is very resistant to quick changes.  But the history accumulation also includes a calculation to determine if deflections are trending in a consistent direction.  The slope weight parameter, expressed as a percentage, determines how much influence this should have in calculating the actual guider movement - it is there to keep the algorithm from being overly sluggish.  If you set a slope weight of zero, the guide pulse will always be just the median value of the recent history.  If you set a non-zero slope weight, that median value will be adjusted either upward or downward based on the recent trend of guide star movements.  Because the low-pass algorithm is so resistant to quick changes, it is probably most applicable to declination guiding.

The LowPass2 algorithm is a variation of the original LowPass algorithm with somewhat different behavior.  It also maintains a history of guiding corrections, but the next correction is simply a linear extension of the commands that have come before it (i.e. a slope calculation).  This continues until a significant change in direction is seen, at which point the history is cleared.  The algorithm has two adjustable properties: minimum-move and aggressiveness.  Minimum-move has the same effect as it does in the other guide algorithms, and aggressiveness (percentage) is a way of further dampening the size of the guide corrections. LowPass2 is a very conservative, high-impedance algorithm that may be a good choice for users with good seeing conditions and well-behaved mounts with little or no declination backlash.
 
--
Jerry Hubbell
Vice President of Engineering

Explore Scientific, LLC.
jrh at explorescientific.com

www.explorescientificusa.com
1010 S. 48th Street
Springdale, AR 72762
1-866-252-3811

Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
             Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home


Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Wilderness, VA
Mounts
: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras:  QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating

Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!

3261 - 3280 of 9775