Date   

Re: External Power #EXOS2 #starparty #TECHNICAL

Mark Christensen
 

Friends,

 

If you want to see some off-the-shelf (kits or finished) of battery boxes with meters, connectors, power converters, and so on just search on “Trolling Power Center” in Amazon. If nothing else the results will give you an idea of what people are talking about and what such gadgets should cost outside of the astro-market.

 

Like Wes, if I was building mine today I would use power poles instead of cigarette power plugs.

 

You can build or buy one of these along with a deep-cycle battery (mine has lasted over 8 years) for about the same as a 17AmpHr “power tank”, esp. this time of year when marine batteries are often on sale (at least up here in the frigid north). And when the battery does go bad it will be trivial to replace it. Some of the astro-market-specific  Power Tanks are really a pain to take apart – Google on “Replacing Power Tank Battery”. Lots of screws and connectors.

 

They fail because of the cheap chargers often supplied with them can cook the battery, by the way. If you read their instructions you’ll see the warning. The solution is to get a good charger that goes into float mode. Cheap insurance.

 

Regards,

 

Mark Christensen


Re: External Power #EXOS2 #starparty #TECHNICAL

Wes Mcdonald
 

Like Steve, I built my astro power supply from a deep cycle marine lead-acid.  It is 110 amp-hour I think.  There is nothing like just loading up the power supply and going forward with no power worries.  

I keep it on a battery conditioner/charger between uses.  My setup includes many different output connectors, including high output USB jacks, etc.  Although anyone starting out should [probably employ Anderson power pole connectors, for their main power use, I used the venerable and terrible car cigar lighter adapters.  I also have a metering system that displays the voltage, current, watts, and amp-hours drawn.  Its really handy to have that information, especially the amp-hours so you know where you are.  

These big batteries are really overkill for the drive mechanisms but are pretty much a necessity for dew heating, TE cooling of cameras, charging lap tops, running cameras, charging phones, operating a local wireless router...all the danged electrical equipment you might need in the field.  Also, since the supply is deep, I keep a 12-120v inverter just in case there is something that needs 120...I don't like to use it, but at least efficiency loss is not a disaster given the size of the power tank.

My battery has lasted over 5 years, and shows no sign of giving up anytime soon.

Instructions for building these things are all over the internet.

Wes.


--
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired


Re: External Power #EXOS2 #starparty #TECHNICAL

 

I ended up with a Power Tank Pro - a LiFePo4.  It was expensive, but the discharge voltage is much flatter over time than Li-ion, and for my setup I haven't found the endurance limit yet.  All I know is that for the ambient temps I have used it at so far, the limit is TBD, and somewhere beyond 6hr.  And if I wanted to travel with it, it's FAA-approved for carry-on.
 
But I think this only works because my power needs are modest.  If you were to throw, say, a cooled camera into the mix rather than a DSLR, that would be a whole different problem - and the answer would probably be lead.

- Bob
 
--
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2-IMX224C
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


Re: External Power #EXOS2 #starparty #TECHNICAL

Jim McKee
 

Steve,
Good to hear that you are using and AGM battery.  I think that is the direction I will go/.
--
Scope:        Orion EON 115mm APO
Mounts
:      ES EXOS2-GT w/ PMC-8
Cameras:   Canon 6D Mk 2, Canon 7D2, 1D Mk 2, EOS 60D Asto Modified
Lens:
          Canon EF 100-400mm f/4.5-5.6L IS II
Misc:          TELRAD, ZWO ASI120MM Guide Camera, Astromania 60mm Guidescope, Senso Sesto Focus Motor
Software:   EXPLORESTARS IOS & WIN, Stellarium. NINA,  APT, DSS, PixInsight, Photoshop CC
Computer:  Dell Latitude E5450, Windows 10


Re: External Power #EXOS2 #starparty #TECHNICAL

Steve Siedentop
 

Great find, Jim!

There’s a relatively recent addition to the battery technology mix using Lithium-Iron-Phosphate chemistry, sometimes listed as LiFePo4 in marketing literature.  The benefits are weight & size, shelf life, and safety.  The two recent iterations of the Celestron PowerTank use such a battery and the Explore Scientific power bank might as well.  The downside, because there’s always a downside, is cost.  I priced a 100 amp-hour LiFePo4 deep cycle for solar applications and the price was over $1,100.00.  Even with all the benefits and 15 pound weight, I couldn’t justify the cost compared to my 100 amp hour, high-maintenance, 50 pound, Group 31 deep cycle AGM battery.

The price will come down on LiFePo4 batteries, so they’re something to keep on your radar.

-Steve

On Sun, Nov 10, 2019 at 8:17 AM Jim McKee <mckeejh@...> wrote:
I have also been exploring battery options.    I found this article to be good background if you want to compare lead-acid battery technologies.:

http://cfas.org/data/uploads/astronomy-ebooks/batteries.pdf

--
Scope:        Orion EON 115mm APO
Mounts
:      ES EXOS2-GT w/ PMC-8
Cameras:   Canon 6D Mk 2, Canon 7D2, 1D Mk 2, EOS 60D Asto Modified
Lens:
          Canon EF 100-400mm f/4.5-5.6L IS II
Misc:          TELRAD, ZWO ASI120MM Guide Camera, Astromania 60mm Guidescope, Senso Sesto Focus Motor
Software:   EXPLORESTARS IOS & WIN, Stellarium. NINA,  APT, DSS, PixInsight, Photoshop CC
Computer:  Dell Latitude E5450, Windows 10


--
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: External Power #EXOS2 #starparty #TECHNICAL

Jim McKee
 

I have also been exploring battery options.    I found this article to be good background if you want to compare lead-acid battery technologies.:

http://cfas.org/data/uploads/astronomy-ebooks/batteries.pdf

--
Scope:        Orion EON 115mm APO
Mounts
:      ES EXOS2-GT w/ PMC-8
Cameras:   Canon 6D Mk 2, Canon 7D2, 1D Mk 2, EOS 60D Asto Modified
Lens:
          Canon EF 100-400mm f/4.5-5.6L IS II
Misc:          TELRAD, ZWO ASI120MM Guide Camera, Astromania 60mm Guidescope, Senso Sesto Focus Motor
Software:   EXPLORESTARS IOS & WIN, Stellarium. NINA,  APT, DSS, PixInsight, Photoshop CC
Computer:  Dell Latitude E5450, Windows 10


Re: External Power #EXOS2 #starparty #TECHNICAL

Steve Siedentop
 

Hi Scott -

Painful experience has taught me to have my imaging camera/cooler, computer, and dew heaters on one power source and the mount on another.  The product you referenced has a capacity of 27 amp hours, but they’re not clear how they calculated that.  I’m betting that’s 27 amp hours at 5 volts rather than 12.

The Explore Scientific Power Bank will run my PMC-8 G-11 for about 7 hours, which is long enough for most of my imaging sessions.  For the rest of my gear, I built a battery box for a 100 amp hour Group 31 deep cycle battery.  They’re cheap when you consider the capacity you’re getting, but they’re fairly heavy.

I would recommend you avoid using an inverter to run your gear off of an ac power supply.  Everything we typically use runs off of dc.  Converting dc (your battery) to ac using an inverter and converting it back to dc using a wall wart or other power supply is a waste of energy.  You’ll even find dc chargers, sometimes called car chargers, for your laptop on Amazon.  Go with the PWR brand if you go that route.  They’ve never let me down.

If you’re the DIY type, I’ll be happy to send you plans and a parts list for the battery box I built.  It’s not hard and you’ll be able to put it together in an afternoon.  You’ll end up with a finished product that meets your needs better than anything you could buy.

-Steve

On Sat, Nov 9, 2019 at 12:43 PM Scott - Moron Astronomer <allstar@...> wrote:
Hi,

I'm looking at this external power source and was wondering if you think it would work fine as an external power source. I'm not an electrical engineer so I don't know what to look for. I'm thinking this would work fine, but just want to double check. I know Explore Scientific has an external battery pack, but I like that this one has other charging ports as well.

https://www.ravpower.com/products/rp-pb055-27000mah-portable-charger

Thanks for any help,

Scott
--
Mounts: ES PMC-8 Exos II
Scopes: ES 127ED
Cameras:  ZWO ASI224MC, Canon Ti7
Controller: Dell Laptop with WIndows 10
Software: Explorestars


--
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: External Power #EXOS2 #starparty #TECHNICAL

 

Scott,
 
It really depends on how much power you plan on drawing, and for how long, and at what voltage, and at what temperatures.
 
My setup (AP-only, PMC8, DewNot dew heaters, usb hub, DSLR, Guide camera) bounces around a bit, but on average draws not much more than 1A.  Really pretty frugal - the DewNots are not power hogs, and a little heat goes a long way, at least for me.  My power is measured and distributed by a Pocket Powerbox (which also controls the heaters), and I really do not want to run my overall setup below 11v.
 
I read all the glowing reports about Talentcells on CN and picked up their 12v/11000mAh model.  Charged it up, and it dropped below 11v on me, after couple of hours.  In June, not winter.  
 
Basically, it still had lots of power left, but only at lower voltages.  If I'd been charging USB devices off it, it would have been a different story.  It wasn't so much the total power the battery could store, as whether it could maintain that at the voltage I needed over time.  That voltage drop seems to be a feature of Lithium-ion batteries as a species.  As far as I can tell, the Talentcells are good Li-ions, but they're still Li-ions...
 
After figuring out what was going on, I returned the Talentcell, and got a battery from another mfr, using LiFePo4 technology.  Much flatter voltage when discharging, and sadly, more expensive.  I've done 6+ hour sessions so far, in colder temps, with it still holding in the high 11's (voltage).  I do not know how much farther out the failure point is, but so far, good enough for me - although I may need to wrap it up with a handwarmer when we get down into the -10/-15C range.  First winter coming, so we'll see.  
 
So...think about your requirements and be cautious about capacities and voltages.  I went for LiFePo4 because I did not want the weight of a lead-based battery, but if I had larger power or endurance requirements in my environmental conditions (winter is coming...), I think I'd have to go to lead.
 
FWIW...
 
- Bob
 
--
Mounts: ES PMC-8 EXOS2
Scopes: SV 102EDT, ZWO 60/280 Guide
Cameras:  Nikon D5300, Altair GPCAM2-IMX224C
Software: ASCOM, CdC, AstroTortilla, BYN Pro, Sharpcap, PHD2
Computer:  Thinkpad x230, Win7Pro/64


Re: External Power #EXOS2 #starparty #TECHNICAL

Wes Mcdonald
 

Scott

The PMC8 needs about .5 amps.  A battery with a capacity of 5000 ma hours (milliamp hours) or 5.0 amp hours will run the mount for about 5/.5 or 10 hours.  Now derate this by about 50% for safety and you have 2.5 hours.   A battery with 25000 ma hours would provide 25/.5 or 50 hours...derate by half and get 25 hours.  Pretty impressive.  

The thing is when you are observing you will need dew heaters in summer and sometimes in winter too.  These things will pull about 2 amps at least for the main objective and the eyepiece.  Then you need one for the guide scope and maybe two for your finder scope so that's another 2 or three amps.  So say you need 4 amps of dew control.  All of a sudden the 5000 ma battery looks dead in 5/4.5 or about an hour.  The 25000 ma hr one is done in 5 without derating.  So expect less.

I have a huge lead acid battery solution so I never worry.  (100 amp hours...haha at 40 pounds).  But I would surely go with as big a battery as you can afford.  But be careful these big lithium batteries might not be able to be carried on aircraft...as in taken in vacation with you.   So check that out.  In fairness I haven't and won't haul my lead acid along on a flight...probably couldn't anyhow.

Don't plan on using an ac-dc adapter powered by a battery (which has a built in 120 volt inverter) as this will be a huge power waster.  I would imagine you would suffer huge reductions in use time.  Be sure to get a battery which has a built in 12v output capability.

Wes





--
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired


Re: Recent image with G-11 PMC-8 & ES 127 FCD-100 #astrophotography #G11

Wes Mcdonald
 

Jennifer

When I grow up I hope I can take such a picture.  Beautiful.

Thanks for sharing

Wes

--
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired


Re: External Power #EXOS2 #starparty #TECHNICAL

Lloyd Simons
 

Scott,
I have not tried to use everything on a single battery yet but I think it has enough power to work for a few hours.

Lloyd



--
Lloyd Simons
Mattawan, MI
Telescopes: Astrotech AT72ED II, Orion 8" Dobsonian, Tectron 15" Dobsonian, Celestron Super Polaris C8
Imaging Camera: Canon T3i
Guide Camera: QHY5L-IIM with a 100mm CS Mount Lens
Mounts: iExos-100 PMC-8, Vixen Super Polaris
Mount Control: KODLIX gn41 mini PC, Explorestars on a Lenovo Tab 2 A10-70F Android 6.0
Software: N.I.N.A. for imaging, PHD2 for guiding, Sharpcap for PA, Cartes du Ciel, PixInsight


Re: External Power #EXOS2 #starparty #TECHNICAL

Scott - Moron Astronomer
 
Edited

Thanks Lloyd.

Yes, to power the mount. I'm going on family vacation and was going to buy a battery charger so figured why not get something I can use for more than one application.

I like the second one you posted. So, for astrophotography do you use both batteries listed? One to power mount and the other to power equipment? Or, do you just use the second one to power mount and all your equipment when you do astrophotography?

Scott
--
Mounts: ES PMC-8 Exos II
Scopes: ES 127ED
Cameras:  ZWO ASI224MC, Canon Ti7
Controller: Dell Laptop with WIndows 10
Software: Explorestars


Re: External Power #EXOS2 #starparty #TECHNICAL

Lloyd Simons
 

Scott,

What are you trying to power? Just the mount? If so this is definitely overkill. I have 2 batteries.

 

The smaller one has enough juice to run the mount for several hours. The large one I use for my AP setup. The one you linked to doesn't appear to have a 12v port so you would need to plug in an AC power supply into the 3-prong outlet. It should work though.

--
Lloyd Simons
Mattawan, MI
Telescopes:
 Astrotech AT72ED II, Orion 8" Dobsonian, Tectron 15" Dobsonian
Camera: Canon T3i
Mount: iExos-100 PMC-8
Mount Control: Explorestars on a Lenovo Tab 2 A10-70F Android 6.0


External Power #EXOS2 #starparty #TECHNICAL

Scott - Moron Astronomer
 

Hi,

I'm looking at this external power source and was wondering if you think it would work fine as an external power source. I'm not an electrical engineer so I don't know what to look for. I'm thinking this would work fine, but just want to double check. I know Explore Scientific has an external battery pack, but I like that this one has other charging ports as well.

https://www.ravpower.com/products/rp-pb055-27000mah-portable-charger

Thanks for any help,

Scott
--
Mounts: ES PMC-8 Exos II
Scopes: ES 127ED
Cameras:  ZWO ASI224MC, Canon Ti7
Controller: Dell Laptop with WIndows 10
Software: Explorestars


Re: Recent image with G-11 PMC-8 & ES 127 FCD-100 #astrophotography #G11

Jerry Hubbell - Explore Scientific VP Engineering
 

On Sat, Nov 9, 2019 at 10:16 AM, Jennifer Shelly wrote:
Additionally I am having a hard time finding the correct spacing for the FF/FR as my search results have yielded anywhere between 55 mm to 65 mm.
Hi Jennifer,

We use the 3-inch 0.7x FRFF on the 6.5-inch ES 165 FPL53 ED APO CF scope (with a Moonlite focuser - I think they are the best) in the MSRO and it works pretty well. The scope is F/7 and with the FRFF it is f/5.2. The design spacing is 55 mm which is what we use. Our imaging train is a QHY163C camera with QHY FW-S and the FRFF.  It's pretty flat in the middle but the field curvature starts to increase towards the corners when using larger chip cameras. 

--
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: Recent image with G-11 PMC-8 & ES 127 FCD-100 #astrophotography #G11

myron_wasiuta
 

Beautiful image! Id be very happy with results like that. Once you get that spacing nailed ( im sure Jerry can help with that) i think youll be very satisfied with the results!
Myron Wasiuta
Director-Mark Slade Remote Observatory
ES CGE PMC-Eight (prototype)


On Nov 9, 2019, at 10:16 AM, Jennifer Shelly via Groups.Io <drunkendogg@...> wrote:

Hello Fellow PMC-8ers:

I don't normally share my images with the group and this image in particular has some flaws related to the Hex Focuser sagging and spacing between my QHY 168C and ES 0.70x FF/FR.  The use of the hex focuser was temporary while my MoonLite CFL focuser was getting upgraded.  Additionally I am having a hard time finding the correct spacing for the FF/FR as my search results have yielded anywhere between 55 mm to 65 mm.  If anyone could let me know what the correct spacing between my ES 127 FCD-100 it would make my day.

With all that said I am sharing an image of the Horsehead and Flame Nebulas I captured last weekend.  I am satisfied with my results, but I know I can do better.  If you have comments/suggestions please be constructive. 


 
--
Sincerely,

Jennifer Shelly
AstroPorch, VA

Mounts
: ES PMC-8 G-11, ES PMC-8 EXOS-2
Scopes: ES ED127 FCD-100, ES Levy Comet Hunter, ES N208CF, Meade APO 70 MM Astrograph, QHY Mini Guide Scope
Cameras: QHY168C, ZWO ASI183MC-P, ZWO ASI183MM, Nikon D5600
Misc: MoonLite CFL 2.5 / High Res Stepper / V2 Mini Controller, Baader SteelTrack NT / SteelDrive II, Baader UFC, Optolong 2" L-Pro / L-eNhance
Imaging Software:  APT, BYN, SharpCap Pro, ASICap
Processing Software: PixInsight, Lightroom, Premiere Elements


Recent image with G-11 PMC-8 & ES 127 FCD-100 #astrophotography #G11

Jennifer Shelly
 
Edited

Edited to include photon collection details.

Hello Fellow PMC-8ers:

I don't normally share my images with the group and this image in particular has some flaws related to the Hex Focuser sagging and spacing between my QHY 168C and ES 0.70x FF/FR.  The use of the hex focuser was temporary while my MoonLite CFL focuser was getting upgraded.  Additionally I am having a hard time finding the correct spacing for the FF/FR as my search results have yielded anywhere between 55 mm to 65 mm.  If anyone could let me know what the correct spacing between my ES 127 FCD-100 it would make my day.

With all that said I am sharing an image of the Horsehead and Flame Nebulas I captured last weekend.  I am satisfied with my results, but I know I can do better.  If you have comments/suggestions please be constructive. 

 

Photon Collection Details:

IC 434 ~ Horsehead Nebula & NGC 2023 ~ Flame Nebula

AstroPorch, VA ~ Bortle 7 ~ Jennifer B. Shelly ~ 11/02/2019

ES Losmandy G-11 PMC-8 ~ ES 127 FCD-100 f/7.5

QHY 168C ~ 2" Optolong L-eNhance ~ ES 0.70x 3" FF/FR

Solomark F60 Guide Scope ~ QHY 5L-IIC

10 Lights ~ 300s ~ -20°C ~ Gain 4 ~ Offset 30

50 Bias ~ 0.001s ~ -20°C ~ Gain 4 ~ Offset 30

6 Darks ~ 300s ~ -20°C ~ Gain 4 ~ Offset 30

46 Flats ~ 0.75s ~ -20°C ~ Gain 4 ~ Offset 30

PixInsight 1.8.7 ~ APT 3.73 ~ Stellarium ~ Stellarium Scope ~ PHD2 ~ POTH


 
--
Sincerely,

Jennifer Shelly
AstroPorch, VA

Mounts
: ES PMC-8 G-11, ES PMC-8 EXOS-2
Scopes: ES ED127 FCD-100, ES Levy Comet Hunter, ES N208CF, Meade APO 70 MM Astrograph, QHY Mini Guide Scope
Cameras: QHY168C, ZWO ASI183MC-P, ZWO ASI183MM, Nikon D5600
Misc: MoonLite CFL 2.5 / High Res Stepper / V2 Mini Controller, Baader SteelTrack NT / SteelDrive II, Baader UFC, Optolong 2" L-Pro / L-eNhance
Imaging Software:  APT, BYN, SharpCap Pro, ASICap
Processing Software: PixInsight, Lightroom, Premiere Elements


Re: Trying Superlube

Jennifer Shelly
 

Thanks Jerry.  I purchased the DIY video (no parts) from DeepSpace when I worked on my Exos-2.  The video was for the LDX-50 which is essentially the same as the Exos-2.  
--
Sincerely,

Jennifer Shelly
AstroPorch, VA

Mounts
: ES PMC-8 G-11, ES PMC-8 EXOS-2
Scopes: ES ED127 FCD-100, ES Levy Comet Hunter, ES N208CF, Meade APO 70 MM Astrograph, QHY Mini Guide Scope
Cameras: QHY168C, ZWO ASI183MC-P, ZWO ASI183MM, Nikon D5600
Misc: MoonLite CFL 2.5 / High Res Stepper / V2 Mini Controller, Baader SteelTrack NT / SteelDrive II, Baader UFC, Optolong 2" L-Pro / L-eNhance
Imaging Software:  APT, BYN, SharpCap Pro, ASICap
Processing Software: PixInsight, Lightroom, Premiere Elements


Review of the ES/Losmandy G11 PMC-Eight Mount System by Steve Siedentop #ExploreScientific #G11

Jerry Hubbell - Explore Scientific VP Engineering
 

Customer Steve Siedentop has submitted a review of the ES/Losmandy G11 PMC-Eight Mount System based on his year-long experience using the mount. Steve has been a part of our ongoing improvement process in our PMC-Eight system and also is involved with the Open GOTO Community Steering Committee (OGCSC). You can find his review in a blog on our website:

https://explorescientificusa.com/blogs/explorescientific/review-a-year-with-the-pmc-eight-g-11
 
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: 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

David Shadbolt
 

How are you polar aligning? I've had problems with it.. rigged a green laser to point through the tunnel, and can only do 30 second exposures.