Date   

Re: Another newbie question on alignment

Wes Mcdonald
 

Parag:

Well, I am not sure there is no benefit, but the benefit is not with the driver.  I guess it could be possible for the application, such as APT, to somehow use this for its own purposes, in the same way explorestars does.  But I kinda doubt it.

NINA just does a platesolve and moves and it works like a charm.  So plate solve is the answer.

Wes.


--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: Another newbie question on alignment

Parag Modi
 

Wes,

Thank you.  So basically there is no benefit to be gained with multi-point alignment when using ASCOM.  I'm just better of simply using plate solving to get to my targets.

I agree, Plate Solving has simplified things a whole bunch.

--
Parag Modi

Mounts: ES iEXOS-100
Scopes: APS-C Sigma 18-300 mm
Cameras:  Nikon D7200 (Unmodified)
Misc: Bahtinov Mask, K&F Concept Clear night filter
Software: ExploreStars, Stellarium, APT


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Derrell Oliver
 

Thanks Wes !!
--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Wes Mcdonald
 

Oh yeh!  nice!


Wes.


--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Derrell Oliver
 

Thanks Harry,
I hope you have better luck with your laptop !!
--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Harry
 

Derrell, beautiful! I hope to do the same target tonight.
--
Harry
Vero Beach, FL

Mounts: ES iExos 100-PMC Eight
Scopes: ES  ED80CF, ES AR102,  Meade ETX 90 EC (Deforked)
Guide: ZWO 30mm Mini, ZWO ASI120MM-Mini
Software: ASIair Pro, iPad Pro, MacOS, Starry Sky Stacker, Affinity Photo, Lightroom,  SkySafari Plus
Cameras: Nikon D600, D5500
Misc: ES USB Power Bank, Rigel QuikFinder, 0.8x Focal Reducer
Filters:  Optolong L-Pro, L-eNhance






Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Derrell Oliver
 

Thanks Frank !!
--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Frank Rich
 

Really Nice Work!!


Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #G11 #astrophotography #iEXOS-100 #EXOS2

Derrell Oliver
 

Hey Guys,
Here is my attempt at NGC 2237 Rosette (Skull) Nebula from Friday night.
I spent over three hours outside but only ended up with 51min of exposure time, my laptop kept crashing on me !
17 x 180sec @iso1600, 10 darks, 10 bias & 10 Flats.
 Svbony UHC filter, Canon 450d XSi,AT80ED, iEXOS-100, 0.80 FF/FR.


--
Derrell Oliver

ES iEXOS-100 PMC-Eight with ES Heavy Duty ST3 tripod & Azimuth Adjuster
ES USB Power Bank
Astro-Tech AT80ED.
Astro-Tech 0.8 Field Flattener/Reducer.
Meade Infinity ST80 with Lunt Solar dual speed crayford focuser.
Meade Polaris 90 with GSO dual speed crayford focuser.
Meade Polaris 130 with ScopeStuff 1.25 crayford focuser.
ZWO ASI120mc-s, Canon XSi 450d.
ZWO ASI120mm-mini & ZWO 30mm f/4 Mini Guide Scope
EQ2 Mount with Orion EQ-2M RA Drive.
AZ3 Alt-Azimuth Mount.


Re: Another newbie question on alignment

Wes Mcdonald
 

Parag:

There is no storage of alignment information when using ASCOM, as the driver does not modify pointing based on any model.  When you do a plate solve, the exact position of the field of view is determined.  Using this information an application such as APT (NINA does this also, as would any other app) can determine the error in poiniting.  It then moves the mount the required amount to achieve the actual desired pointing position.  By syncing the mount while at the correct poiniting position the mount immediately knows its correct celestial location relative to its motor counts.  If the mount is pretty well polar aligned this is all it needs to make good goto moves thereafter.   If the mount polar alignment is not good, the gotos will become worse as you move the mount further away from the place where the sync was performed.  However if you do a plate solve at the new location the desired target will soon be centered.

Congratulations!  Plate solving is one of those magic bullets that makes life good!  Add auto focus and you will wonder what all the fuss about astrop[hotography was ever about!

Wes.


--
Wes, Southport NC
EXos2-GT PMC-8, iExos 100
ES ED 127, 10" LX200GPS+wedge, Astro-Tech 8" Newt, ETX-90, 60mm no-name guide scope ~ 260mm FL
Polemaster, Orion ST-80 and SAG, ZWO 290MM, D5300 astro modified
Nina, Bootcamped Mac Mini control computer, RDP to iMAC
110 amp hour lead acid deep discharge battery for field power
Electrical Engineer, Retired


Another newbie question on alignment

Parag Modi
 

Hello,

I have a question on how the multi-point alignment transformation is stored.  My setup includes iEXOS-100, POTH hub with ES driver selected and APT.  I'm using just a plain Nikon D7200 with a Sigma 18-300mm lens and no guiding.  I found a cool script in APT that automates a four point alignment.  Basically it moves my camera to four equal points in AZ/ALT, does a platesolve and sync.  I tried that the other night and it seemed to have worked good since my subsequent GoTo moves were pretty close.  My questions are:
1) Where is the alignment information stored and used?  iEXOS firmware?  POTH hub? or APT?
2) Is there a way to view and save this alignment information in between the sessions (over days) if my mount hasn't moved?

--
Parag Modi

Mounts: ES iEXOS-100
Scopes: APS-C Sigma 18-300 mm
Cameras:  Nikon D7200 (Unmodified)
Misc: Bahtinov Mask, K&F Concept Clear night filter
Software: ExploreStars, Stellarium, APT


Re: Connecting EXOS 2 PMC 8 to ASIair Pro #EXOS2 #TECHNICAL

Steve Siedentop
 

Hi Steve -

This is a good place to start.

https://espmc-eight.groups.io/g/MAIN/files/User%20Contributions/iExos%20and%20AsiAir%20-%20Getting%20Started%20Guide%20-%20Aug%2021,%202020.pdf

-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: #ASCOM #ASCOM

Jeff Snell
 


Hi Tim,
I had slewing issues when I upgraded last week but slightly different.  I lost pulse guiding for PHD2 and the slow speed slew in CdC (.2083) wouldn’t work.  ASCOM Device Hub may be the issue.  Jerry H stated he wasn’t having any issues but that when he upgraded, he selected the option to keep POTH hub in the download.  I uninstalled 6.5, found an old 6.0 version on line, and reinstalled to get POTH back.  Then I reinstalled 6.5 and elected to keep POTH hub in the download.  All is well now...

Hope this helps.

Jeff

EXOS II GT/PMC-Eight, iOptron Skytracker
ESED80mm APO, Celestron 8” Edge HD, TPO Ultrawide
Polemaster, Canon T5i (modified), ZWO ASI 183mm Pro, Orion 50mm Guidescope
Lenovo Thinkpad 11e, 7 Port USB Hub
ASCOM (using POTH Hub), CdC, PHD2, APT, Backyard EOS
Processing w/Deep Sky Stacker, Photoshop (w/Astrophotography Plug-ins)


On Jan 16, 2021, at 9:05 PM, Tim Huseby <Photographybytjh@...> wrote:

Im not sure if this is the correct place to ask this, I finally upgraded to ascot 6.5 sp1 and am having strange behavior when slewing my mount Exos2-gt pic-8. When I was slewing last night trying to use my PoleMaster for polar alignment. when I said slew east the my scope and camera moved west, I would;d select east again and about 99% of the time it would go west and every blue moon it would go back to the east. I am puzzled and scratching my head. I have looked at all the places to put my location in and I think they are correct. Has anyone else had this issue or have suggestions. I did a complete uninstall and re install of ascom but have not had a chance to test it yet.
--
Tim
Las Vegas
Just starting in this Hobby, I have been doing wildlife and landscape photography. 
Mounts
Exos2-gt  PMC-8, Celestron Alt/Azimuth 

Scopes/Lenses:
Celestron SLT 130, William Optics Star 71II  apo, Olympus 7-14,12-40,40-150 Pro 

Cameras: 
Olymous om-d E-M5 Mkii, SBOG STF8300M


Re: 3-4" RA wiggling while PHD2 guiding with EXOS2-GT PMC-eight #EXOS2 #astrophotography

Jennifer Shelly
 
Edited

Walter:

You may want to check out this website that has astronomy related calculations.  

 

--
Sincerely,

Jennifer Shelly
AstroPorch, VA

Mounts
: ES PMC-8 G-11, ES PMC-8 iEXOS-100
Scopes: ES ED127 FCD-100, Askar FRA 400, ES Levy Comet Hunter, ES N208CF, QHY Mini Guide Scope, Solomark F60 Guide Scope
Cameras: QHY600M, QHY128C, QHY168C
Misc: MoonLite CFL 2.5 / High Res Stepper / V2 Mini Controller, Baader SteelTrack NT / SteelDrive II, Baader UFC, Optolong 2" L-Pro / L-eNhance, QHY CFW3-L, Baader 2” LRGBSHO CCD
Imaging Software:  NINA, APT, SharpCap Pro
Processing Software: PixInsight, Lightroom, Premiere Elements


#ASCOM #ASCOM

Tim Huseby
 

Im not sure if this is the correct place to ask this, I finally upgraded to ascot 6.5 sp1 and am having strange behavior when slewing my mount Exos2-gt pic-8. When I was slewing last night trying to use my PoleMaster for polar alignment. when I said slew east the my scope and camera moved west, I would;d select east again and about 99% of the time it would go west and every blue moon it would go back to the east. I am puzzled and scratching my head. I have looked at all the places to put my location in and I think they are correct. Has anyone else had this issue or have suggestions. I did a complete uninstall and re install of ascom but have not had a chance to test it yet.
--
Tim
Las Vegas
Just starting in this Hobby, I have been doing wildlife and landscape photography. 
Mounts
Exos2-gt  PMC-8, Celestron Alt/Azimuth 

Scopes/Lenses:
Celestron SLT 130, William Optics Star 71II  apo, Olympus 7-14,12-40,40-150 Pro 

Cameras: 
Olymous om-d E-M5 Mkii, SBOG STF8300M


Re: 3-4" RA wiggling while PHD2 guiding with EXOS2-GT PMC-eight #EXOS2 #astrophotography

Leigh Caldwell
 

That's just a scale/unit conversion - the number of arcseconds in a degree (3600) divided by the number of microns in a mm (1000).


Re: 3-4" RA wiggling while PHD2 guiding with EXOS2-GT PMC-eight #EXOS2 #astrophotography

Doug Doonan
 

Hi Bassliner,
Thanks for the info.
And where does the 3.6 come from?
Doug Doonan



-----Original Message-----
From: Andreas Volz via groups.io <bassliner303@...>
To: MAIN@espmc-eight.groups.io
Sent: Thu, Jan 14, 2021 1:23 pm
Subject: Re: [ESPMC-Eight] 3-4" RA wiggling while PHD2 guiding with EXOS2-GT PMC-eight #EXOS2 #astrophotography

Hey Doug,

The formula is:
pixel size (microns) x 206.3 /focal length in mm = image scale in arcsec/pixel

206.3 results out of:
3.6 * (180 degrees / pi) = 3600/1000 * (180 degrees / pi) = 206.26

Doug Doonan via groups.io <dougdwd=aol.com@groups.io> schrieb am Do., 14. Jan. 2021, 19:09:
Jerry,
Where does the 206.3 in your formula come from, and what are its units?
Doug



-----Original Message-----
From: Jerry Hubbell - Explore Scientific VP Engineering <jrh@...>
To: MAIN@ESPMC-Eight.groups.io
Sent: Wed, Jan 13, 2021 8:34 am
Subject: Re: [ESPMC-Eight] 3-4" RA wiggling while PHD2 guiding with EXOS2-GT PMC-eight #EXOS2 #astrophotography

Hi Walter,

Yes, I would suggest a 2x Barlow or tele-extender instead of a 3x. The formula for pixel or plate scale is:

Pixel Scale = (Pixel Size x 206.3) / FL, So for your combination: Pixel Scale = (5.2 um x 206.3) / 162 mm = 6.6 arc-seconds/pixel

BTW,  your calibrations look spot on, no problem there,
--
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!


--

Doug Doonan
HomeBru  6 inch Reflector  f 6.6
HomeBru  85 mm Refractor  f 5.6
PMC-8, EXOS 2
Long retired EE.

--
Clear skies,
Andy

Mount: ES PMC-8 EXOS2, ioptron SkyGuider Pro
Scope: SkyWatcher Explorer 150/750 PDS
Cameras: Canon 6D, Canon 7D Mk2
Guiding: ZWO ASI120Mini mono, ZWO 30F4 Guidescope, PHD2
Msc: TS Optics Coma Reducer Corrector 0.95x
Software: N.I.N.A, APT, Pixinsight, DeepSkyStacker, Photoshop

--

Doug Doonan
HomeBru  6 inch Reflector  f 6.6
HomeBru  85 mm Refractor  f 5.6
PMC-8, EXOS 2
Long retired EE.


Re: How to change window size in ASCOM Device Hub? #ASCOM

Marcin Mieszczuk
 

Hi Jerry,

thanks for the information. I will post the question there.

Regards, M.


Re: How to change window size in ASCOM Device Hub? #ASCOM

Jerry Hubbell - Explore Scientific VP Engineering
 

Hi Marcin,

You can find help about the ASCOM Platform and applications (such as Device Hub) on the ASCOM Platform Help Groups.io forum
Help@ASCOMTalk.groups.io | Home

They are a great resource for everything ASCOM
--
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!


How to change window size in ASCOM Device Hub? #ASCOM

Marcin Mieszczuk
 

Hello,

I have upgraded my ASCOM environment to 6.5SP1 and have started using Device Hub instead of POTH. Everything seems to work fine but I have an issue with window size of the application. In Windows 8.1 (1920x1080 resoution) the application opens in the window that is too small to see all the options (eg. Other Actions on "Motion" tab or coordinates' input boxes on "Direct slew" tab).

Does anyone know how to change the size of the application window (I can't figure out how to contact the developer)?

Regards,

Marcin

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