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ES ED102 first dedicated astro selection

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#1 sigo24

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Posted 20 June 2021 - 11:45 PM

So after a bit of research, math, and more research here is where I think I'm at. My "budget" would like to be under $1000. I compared ZWO MC versions of 183, 071, 294, 533 & the 1600MM. My scope is a ES ED102 (714mm) and I do have a 0.8x reducer. I ran each through (pixel size)/FL*206. Used Stellarium and telescopius.com to plan FoV. Went to astrobin and reviewed photos. The FoV is almost the same between the 071 w/o a reducer and the 294 with the reducer. The 071 does not seem to have amp glow? And I keep reading complaints about the 294 amp glow. But I'm already doing darks occasionally with my Canon so no big deal?

 

The 183 < 1 so I scratched it off. The 533, while no amp glow has a lower ratio than 3 other choices.

 

model           pixel size  width height  1x     0.8x  Cost

EOS RP        5.75          36      24       1.65  2.07. N/A (Current)
ASI 183MC   2.4           13.2   8.8       0.69  0.87  $799
ASI 071MC   4.78         23.6   15.6     1.38 1.72   $1480
ASI 294MC   4.63         19.1   13        1.34 1.67   $999
ASI 533MC   3.76         11.31 11.31   1.08 1.36   $899
ASI 1600MM 3.8           17.7   13.4    1.10 1.37   $1280++ filters/wheel

 

I've narrowed my thoughts to the 071 with APS-C, no amp glow, f/7, 46k well, 50% QE OR 294 with 4/3", amp glow, f/5.6, 64k well, hard to find QE for $500 less.

 

Oh and mono is probably too much work for this dad of a 2 year old with 1.5 jobs.

 

Did I miss something? What would you do?


Edited by sigo24, 21 June 2021 - 07:16 AM.


#2 bobzeq25

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Posted 21 June 2021 - 12:06 AM

It's not so much that you missed something, as that you're worrying _far_ too much about small details that are _really_ not important now.

 

The 533 is an excellent modern camera that's very user friendly.  That's what I'd recommend to someone who wants to start out in DSO AP, and has a family.  As a bonus, it's the cheapest.

 

You will shortly have a lot bigger fish to fry.  <smile>

 

At a minimum, cross off the ancient 1600. 

 

Some important "details". 

 

Start out with the reducer, it will make life easier.

 

So will Astro Pixel Processor.  Calibrates, stacks, and  processes in one software, a significant advantage.  Excellent gradient reduction tool for reducing the effects of light pollution. 

 

Don't get swayed by the "free" (money, not time) alternatives.  You're going to have $3000+ invested in the first 50% of this business.  $250 to do the second 50% better and easier is less than trivial.

 

Don't omit the camera calibration frames.  Bias (the 533 doesn't need flat darks), flats, darks.  Don't leave home without them.  <smile>


Edited by bobzeq25, 21 June 2021 - 12:15 AM.

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#3 astrohound24

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Posted 21 June 2021 - 12:15 AM

The 533 is awesome. I don’t regret buying it for a millisecond. It will do far more than I am capable of doing with it yet.
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#4 Juno18

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Posted 21 June 2021 - 05:19 AM

I really enjoy my 533. Best bang for the buck!

 

I do shoot flat darks, flats and darks, but its a piece of cake!

 

Can’t wait to use it again. Going on 7 weeks of poor skies.


Edited by Juno18, 21 June 2021 - 05:23 AM.


#5 sigo24

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Posted 21 June 2021 - 06:13 AM

To be clear I’m not completely new to this. 5 months! My current setup includes the ES ED 102, a field flattener or my reducer, unmodified Canon EOS RP, ZWO 120MM Guide Camera on a ZWO 30mm guide scope, Dew heater, Pegasus PPBA, Pegasus Focus Cube v2, and a R Pi 4 running a custom Astroberry build that I recompiled.

I’ve shot multiple targets, but have reached the point I want to replace my Camera for Ha targets. In another thread my pelican nebula was the best I or anyone could seem to edit and was “meh”.

It’s interesting that so far everyone has said the 533. Honestly, this is what I was thinking before I decided to make sure I do more research.

I don’t mind doing some mosaics (M42 for example). My other problem is I don’t have a good lens above 50mm right now to fill the gap that would be caused. I’m already looking to get the Rokinon 135mm. Again, budget.


Edited by sigo24, 21 June 2021 - 07:20 AM.

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#6 sigo24

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Posted 21 June 2021 - 04:43 PM

Thanks everyone for helping me settle on the 533. 


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