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Show us your Asi2600/Qhy268c images

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141 replies to this topic

#26 smr

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Posted 16 May 2020 - 05:37 AM

Yeah the RASA is a little ridiculous in how much photons it collects wink.gif

This is an oversimplification and I'm no PhD but you can get a rough calculation of this comparison concept with:

 

f-ratioSlower^2 / f-ratioFaster^2

 

5.9*5.9 / 2.2*2.2 = 34.8 / 4.8 = 7.25

 

So in theory it would take 14.5 hours to equal the 2 on RASA. However it doesn't really work that simply and there other factors. The biggest one would probably be the aperture and image scale. Larger image scale=more light per pixel. Your 73mm has 430mm FL and the RASA has 620mm, so you'd be sampling at 1.8"/px and I am at 1.25"/px. Then there's stuff like scope obstruction, reflectivity, transparency, skyglow, etc. This would shorten it a bit so maybe I'd guess like 10 hours? 

 

Thanks! Yeah it is very nice for adding some H-alpha to RGB images. I wouldn't use it for pure narrowband false color images, but you probably could get a decent enough result, just way less efficient.

Thank you for doing that calculation Jarrett.


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#27 RichieS

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Posted 23 May 2020 - 02:37 PM

Some lovely images, keep them coming. 

First light with my new Epsilon 130, it arrived poorly collimated but i felt it was worth a go. I've since dialed it in with the Tak eypiece and crosshair. Target was low and many frames captured before and after astro dark.

 

get.jpg?insecure


Edited by RichieS, 23 May 2020 - 02:38 PM.

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#28 nyda83

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Posted 27 May 2020 - 04:47 AM

too short total exposure to bring out every details but here is my 101 (till when I can get some more fotons)

get.jpg?insecure


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#29 APshooter

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Posted 27 May 2020 - 11:01 PM

Here's my Lagoon and Triffid from the other night.  Pure 2600MC, no Lum boost.

 

get.jpg?insecure


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#30 Umasscrew39

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Posted 28 May 2020 - 05:03 AM

Here is a single 120s guided exposure of the Needle Galaxy.  Why only a single and no stacking?  My laptop keeps crashing due to the file size so I ordered a powerhouse desktop with an AMD threadripper processor to calibrate and post-process my images.  I have 3 hrs of data anxiously awaiting to be processed but I was surprised of the quality from this single frame.  Very similar to my ASI533 MC Pro, which is essentially its little brother.

 

https://www.astrobin.com/4999ic/

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  • Needle Galaxy.jpg

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#31 DrGomer

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Posted 28 May 2020 - 10:09 AM

Here is a single 120s guided exposure of the Needle Galaxy.  Why only a single and no stacking?  My laptop keeps crashing due to the file size so I ordered a powerhouse desktop with an AMD threadripper processor to calibrate and post-process my images.  I have 3 hrs of data anxiously awaiting to be processed but I was surprised of the quality from this single frame.  Very similar to my ASI533 MC Pro, which is essentially its little brother.

 

https://www.astrobin.com/4999ic/

With the new comp, you should do the even more painful, 2x drizzle (w/ CFA drizzle) integration, denoise, then downsample back to original resolution.  The 533 responded really well to  that process with visually improved S/N. 



#32 mewmartigan

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Posted 28 May 2020 - 11:36 AM

With the new comp, you should do the even more painful, 2x drizzle (w/ CFA drizzle) integration, denoise, then downsample back to original resolution.  The 533 responded really well to  that process with visually improved S/N. 

I do the 2x drizzle (with CFA) and it took my computer 20 minutes to run TGVDenoise on my last image. I usually do crop, DBE/ABE, Photometric color calibration and denoise before downsampling back to a "measly" 26MP.  I really like the 2600.



#33 Umasscrew39

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Posted 28 May 2020 - 03:36 PM

With the new comp, you should do the even more painful, 2x drizzle (w/ CFA drizzle) integration, denoise, then downsample back to original resolution.  The 533 responded really well to  that process with visually improved S/N. 

What makes you think I am not in a lot of pain now in my Bottle 6 light polluted, hot and humid Florida skies grin.gif ?

 

Actually, really like PixInsight and still learning its plethora of options but I am not fixated on post-processing things to death.  Frankly, I think a basic PI workflow with TGV Denoise does wonders on S/N with both of these cameras.  However, I'll try the 2x drizzle once I get the new comp and see how my pain level raises.  

 

Thanks for the tip. 



#34 Tennyson

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Posted 29 May 2020 - 03:18 AM

Hi Guys, I am interested in this camera as the results shown above look spectacular. Could you advise if you are using just the camera or a combination camera and filters such as the Radian Triad Ultra Filter with these images?



#35 sebastien79

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Posted 29 May 2020 - 09:39 AM

Hi, 

 

First light with my 2600 and my new T300 (Skywatcher Quattro modified) , 70x120s(2h30) at gain 100

 

(full version--> HERE)

 

M101-reduite.jpg


Edited by sebastien79, 29 May 2020 - 09:40 AM.

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#36 gatsbyiv

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Posted 29 May 2020 - 12:08 PM

Hi, 

 

First light with my 2600 and my new T300 (Skywatcher Quattro modified) , 70x120s(2h30) at gain 100

 

(full version--> HERE)

 

M101-reduite.jpg

That is a very sharp image, Sebastien!


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#37 Kriz1027

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Posted 29 May 2020 - 05:49 PM

130 x 180s w/ Hutech IDAS LPS-D2 filter (Bortle 7 skies) unguided. 

Attached Thumbnails

  • E7E74E59-1A5E-4388-AC4A-B17FB4A46468.jpeg

Edited by Kriz1027, 29 May 2020 - 05:50 PM.

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#38 APshooter

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Posted 01 June 2020 - 06:53 PM

Another one, this time through my AP 130:

 

get.jpg?insecure


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#39 R Botero

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Posted 02 June 2020 - 01:31 PM

My first shot with the ASI2600 and also with a tandem imaging setup (controlled with Voyager).  Only 3.5hrs for the OSC camera but it’s great! My last OSC camera was an MX7C in 2004!

 

vdB126, LDN768 and 769 in Vulpecula taken through an AP Stowaway and 0.8x reducer. Details and full resolution here: https://www.astrobin.com/jue5tb/D/

 

Roberto

 

8u888OIFyPUu_1824x0_8Xv0KA5p.jpg


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#40 Umasscrew39

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Posted 03 June 2020 - 05:43 PM

A little better than my single shot (post #30) .........

 

Just over 2 hours total integration time from a C11" EdgeHD @f/7.  Better resolution version on my Astrobin site.

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  • Needle Galaxy_f4.jpg

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#41 junluo168

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Posted 06 June 2020 - 05:12 PM

Rosette shot using ASI2600MC behind a Triad Ultra filter. (Bortle 5) About 20X600 sec.

 

 

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  • Rosette-ASI2600-small3.jpg

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#42 RichieS

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Posted 08 June 2020 - 10:27 AM

More great examples above. Here's my final image of the season, taken in absence of astro dark with an average 70% moon. 

 

get.jpg?insecure


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#43 nyda83

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Posted 14 June 2020 - 07:51 AM

the wall of NGC7000, just 1 hour and 50 minutes. Note there is no noise reduction of any kind applied to this image (too lazy and I'm waiting to have some more exposure to integrate)

 

get.jpg?insecure


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#44 Umasscrew39

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Posted 14 June 2020 - 09:18 PM

Reprocessed the Needle Galaxy (only 2.3 hrs) using the new PixInsight WBPP script.  What a difference it made vs. post #40.

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  • Needle Galaxy_WBPP_.jpg

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#45 R Botero

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Posted 23 June 2020 - 04:45 PM

Another one, now a mosaic (2x1 panels) using the ASI2600 as part of tandem setup:

 

Cepheus in Perspective - B148, B149, B150, NGC6939 and NGC6946 - Mosaic - LRGB

(https://www.astrobin...adq19/D/?nc=all)

 

u4PZ1sS0tfQy_1824x0_tg4JAJRQ.jpg

 

Mosaic (my first!) composed of two panels along RA. Taken during nautical twilight as it does not get truly dark in England until late July now. L taken with Moravian G4 - 152mm refractor at 1300mm - and RGB with ASI2600 - 92mm refractor at 490mm.
Great field to ponder about the distance of objects along our line of sight: Barnard 150, the Seahorse Nebula is at roughly 1200ly; the cluster NGC6939 at 3860ly and NGC6946, the fireworks galaxy, at 22.5 million ly...

 

See link for full resolution 9K x 4K mosaic.

 

Roberto

 

 


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#46 Umasscrew39

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Posted 23 June 2020 - 08:57 PM

Messier 27 Dumbbell Nebula (1.2 hrs)

 

37x120s frames, captured using SharpCap; calibrated and post-processed using PixInsight

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  • M27 .jpg

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#47 APshooter

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Posted 27 June 2020 - 09:33 AM

Taken from my Bortle class 6 skies:

 

get.jpg?insecure


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#48 nyda83

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Posted 30 June 2020 - 06:58 AM

veil nebula with the canon 100-400

get.jpg?insecure


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#49 Umasscrew39

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Posted 04 July 2020 - 12:08 PM

Comparing two versions of M27.  

 

Version 1: Using the L-eNhance duo band filter (the green/red look) 

 

Version 2: Using the L-eNhance filter but extracted the red channel and used it as the luminance which is mostly Ha.  Stretched the RGB channels and then recombined with the luminance channel.  This giving the blue/red version.


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#50 Lead_Weight

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Posted 04 July 2020 - 12:29 PM

Comparing two versions of M27.  

 

Version 1: Using the L-eNhance duo band filter (the green/red look) 

 

Version 2: Using the L-eNhance filter but extracted the red channel and used it as the luminance which is mostly Ha.  Stretched the RGB channels and then recombined with the luminance channel.  This giving the blue/red version.

Really nice! I like the second one. Great processing.


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