Orion ED80T Telescope Review, Setup, First Image

This is a very good telescope to pursue your interest in astronomy and astrophotography with. This is a setup and review of my new Orion ED80T CF Triplet Apochromatic Refractor Telescope. I wanted to add a wide field telescope to my astronomy / astrophotography equipment collection so I could image larger targets. I intend to use this telescope with my Celestron AVX mount and save the heavier loads for the CGX mount. The target today was the Orion (M42) and Running Man Nebula and I captured them in LRGB with my ZWO ASI1600mm-cool mono camera. Here are the telescope details:

Optical Design: Refractor – Apochromatic
Telescope Aperture: 3.15″
Telescope Focal Length: 480mm
Telescope Focal Ratio: f/6
Highest Useful Magnification: 160x
Limiting Stellar Magnitude:12.2
Optical Coating: Fully Multi-Coated
Tube Color or Finish: Carbon Fiber
OTA Mount Type: Vixen-Style Dovetail
Length of Optical Tube: 15″
Optical Tube Weight: 5.5 lbs.
Case Included?: Yes

Here is more info on how the Orion Nebula was captured:

Telescope: Orion ED80T CF Triplet (480mm focal length, f/6)
Mount: Celestron CGX
Polar Alignment: QHYCCD PoleMaster
Imaging Camera: ZWO ASI 1600MM-Cool (mono)
Filters: Lum=80×20″, R=40×20″, G=40×20″, B=40×20″ (Gain 139, Offset 21)
Filters: Optolong L-Pro filter – 2″ Mounted
Total exposure time: 60 minutes
Guide scope: Astromania 50mm Deluxe Finder & Guidescope
Guide Camera: Lodestar X2
Guide Software: PHD2
Darks: 50, Bias: 50, Flats: 20
Capture software: Sequence Generator Pro
Stacking software: PixInsight
Post Processing: PixInsight, Photoshop
Dew Shield, Dew Heater Strip


longhunter1951 says:

Hi , do you have any issues with adjustment to line up the ED80T . thanks for posting

Marcelo Melo da Silva says:

Very good equipment and shot. I wish my guiding would be as good as yours.

ticarot says:

Nice review. I’m looking at buying an entry level setup for backyard AP. This scope and the AVX mount seem about right. But I’m so close to my neighbors houses that I need a quiet drive system. Would the AVX be OK for that, or would there be better choices?

Netty Voyager says:

Try SharpCap 2.9 that’s a good program 🙂

ciraxis82 says:

Hey Chuck I wanted to ask if you purchased a field flattener for the 80mm and if you were able to attach the ZWO to it ok. I have an 80mm and field flattener but my next purchase is the 1600mm cooled, I just want to make sure it will attach to a 2″ field flattener

Carlos Andres Gómez M says:

Hello Chuck. Nice Video! I was wondering wich programs did you use to capture, guiding, etc. Thanks!

Kaos033 says:

I don’t understand why you don’t use the highest dynamic range setting for the ASI 1600MM C. I can understand wanting to use the 139 gain setting in certain situations, but M42 is not one of them. The core is so bright it seems to me that you are killing the ability to capture the fine details because your gain setting is too high on this target. you are just blowing the core up with that setting when it is totally unnecessary. Try it. Your exposure time on some targets may be higher, but not by a ton. I usually will take a preview image at both gain settings and select the one that gives the best result without blowing the core out.

Daniel Wirz says:

Great Toys!!!

Popping Candy says:

Thanks Chuck great vids. Much appreciated.

Kaos033 says:

The “rule of thumb” I use (and that is what it is) is on targets that have a bright core such as galaxies and certain nebula, I tend to use the Highest dynamic range. You can get longer exposures and a better S/N ratio on the faint details. If the target has not bright central core, I tend to gravitate to the higher gain setting. Give it a go and I think you will be please with the results. Of course you will have to take a set of darks for that setting. Yes, your exposure times on certain targets may increase, but you will not fight the over exposure issues.

Elliott Astro-Imaging says:

That’s a great setup and an amazing image of Orion

Wolfie6020 says:

Thanks again for a great review.

Justin Dixon says:

Where the hell you get the money for this stuff?! Nice scope.

Ace Roane says:

what program did you use at 4:48

Ray says:

I gave up on this hobby. Too expensive. Still watch the videos though.

Netty Voyager says:

sorry don’t like cat’s that would do really nice with a CCD camera that new scope 😛

Jeff Lucas says:

How does this compare with your short tube 80 since they are both 80mm?

Netty Voyager says:

it wants to be fucking gold plated for the price you paid for it I know they are not cheap but you get what you pay for and they are quality but hey I still love my skywatcher

Netty Voyager says:

don’t go all OCD on the graph you cant stop the planet from wobbling I have seen people take there scopes apart to fix it all you do is break your scope 🙂

Dave Hudson says:

Another great shot and good video – looks like a great little scope…. BTW – you could just use the SCT as your guide scope instead of adding another one on top of the ED80 – i’d use you f/6.3 focal reducer and the SCT as you guide setup – i’ve done it before and it works quite well!

Carlos Galliath says:

What is the object moving on the left of the image starting at 3:50?

Galactic Adventurer says:

Hi. I like your videos. How good is the AVX mount?

aerofart says:

Congratulations, Chuck! Nice little scope and great image! Enjoy!

Jason Murphy says:

Great final image. did you need to use a field flattener with this new scope?

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