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Coma Galaxy Cluster

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#26 Jon Rista

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Posted 23 April 2015 - 03:27 PM

I won't be getting the CCDT67 until I have a smaller sensor. I think it would heavily vignette my 5D III, and I can no longer afford to get a CCD this year. I'm tapped out (and then some) for a while. I am probably going to get the TSRCFlat2 and TSOAG9 for EOS, which has a 45mm clear aperture, which should let me image at 1625mm. That's going to be pretty deep, so it will be interesting to see how well I can do with that. 

 

That said, imaging at 1625mm with a full frame and tons of megapixels is not really going to be all that different than imaging at a shorter focal length with a smaller sensor and fewer megapixels. I can always just downsample my images, and since I'll be oversampling my average seeing by about 4.2x (and better seeing by about 3x), downsampling by 50% should produce some excellent quality results. The only thing I'd be missing would be mono and the ability to use custom filters. 

 

I actually started imaging Coma Cluster at 840mm f/5.6. I only have a handful of frames that I'm pretty sure are junk, but it seemed to be a nice field. I was imaging Markarian's at 840mm as well, but I think I got the orientation wrong, so it did not fit the frame well. I kept imaging it, though, as I figured maybe the odd framing might actually make it unique enough to be worth the effort...however with the weather, I may well not be able to finish either. 


Edited by Jon Rista, 23 April 2015 - 03:29 PM.


#27 rflinn68

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Posted 23 April 2015 - 04:07 PM

I understand the weather thing for sure. I was lucky to finally get a couple clear nights in a row to do this image. My next night looks like it will be Saturday at the earliest and by then the Moon will be a factor again, not setting till 1 or 2am. Maybe its time to go to the narrowbands and try PN Jones Emberson 1.  :D



#28 Jon Rista

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Posted 23 April 2015 - 05:03 PM

PN Jones Emberson 1 (goes to google)....

 

I forgot about the moon. Darn thing. That will shut me down for another two weeks....I guess UNLESS I can do planetary. Hopefully I'll get collimation figured out soon here. 



#29 rflinn68

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Posted 23 April 2015 - 05:09 PM

PN Jones Emberson 1 (goes to google).... 

 

Looks like a pair of lips.  ;)



#30 rflinn68

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Posted 23 April 2015 - 10:22 PM

This is my final version, with the framing and a slight contrast boost.

 

ComaCluster_LRGB_Framed_CN.jpg

 

 



#31 schmeah

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Posted 24 April 2015 - 05:28 PM

Wow! What a great image. So nicely done.

Derek

#32 Goofi

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Posted 24 April 2015 - 05:54 PM

Gorgeous, Richard ... love the framing!



#33 rflinn68

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Posted 24 April 2015 - 06:23 PM

Thanks Derek and Goofi  :D



#34 terry59

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Posted 24 April 2015 - 06:55 PM

I'm not jealous Rich...not at all :grin:



#35 Joe Eiers

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Posted 25 April 2015 - 01:13 AM

Fantastic!!!!!!  Looks like you could just dive into the void of galaxies...

Love the framing.



#36 Lenbo

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Posted 25 April 2015 - 11:01 AM

Really nice. Love this type of image. Len

#37 rflinn68

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Posted 25 April 2015 - 06:31 PM

Thanks Terry  ;)  Thanks Joe and Len!   :D



#38 anismo

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Posted 25 April 2015 - 06:33 PM

Might be a clear night here tonight! Here I come coma cluster..!! Thanks for the inspiration Richard :)



#39 rflinn68

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Posted 25 April 2015 - 06:46 PM

Its looking real good here tonight too. 3/5 seeing, 4/5 transparency....1/2 a MOON!  :mad:

 

I think it will set around 1 or 2 am for us though. Good luck tonight Anis!  :D



#40 rflinn68

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Posted 26 April 2015 - 12:40 AM

The Final_Final version.  ;)  There are about 5 or 6 galaxies in here that show some pretty blues in them. Just brought those out a tad more. :D

 

 get.jpg

 

 

Final_ComaCluster_LRGB_Framed_CN.jpg

 



#41 Goofi

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Posted 26 April 2015 - 12:54 AM

Oh, come on ... I'm sure we can coax a final_final_final version out of you   :p

It looks great, Richard - congrats!



#42 rflinn68

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Posted 26 April 2015 - 01:17 AM

:lol:  Maybe?  ;)  Thanks Goofi

 

EDIT: I dont know though. Started on a new project now. Just got my RGB and started Luminance and the wind is going nuts now. Hope it calms back down!  :mad:



#43 anismo

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Posted 26 April 2015 - 09:25 AM

Very nice Richard!. I like the final version. I didnt realize you had 15 minute subs on these.  I like your version better than the "target" image you posted in your original post.

 

I managed only 24x600 second L subs last night  on this and it is rainy today and moon is growing.  I also couldnt figure out how to frame it :) All I could see are lots o little fuzzies. so I am not even sure I am in the sweetspot of this cluster. Now that I think about it, I should downloaded your image and platesolved it instead. It is getting higher as well for me. I will try to get more L and RGB on this week if I get a chance.

 

EDIT: Missed the cluster.. Grr!!! . I am going to try making this into a mosaic.. 

 

L_Processed_800.jpg


Edited by anismo, 26 April 2015 - 12:16 PM.


#44 rflinn68

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Posted 26 April 2015 - 01:09 PM

Thank you Anis.....as for framing yours, you can either download and plate solve mine or the "target image" I posted from Mark. I shot to center on NGC 4898. Hope this helps.



#45 anismo

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Posted 26 April 2015 - 01:15 PM

Thanks Richard. I should have done this correctly. Anyways.. I think i will go for 4-5 hours of Lum and try making a mosaic.. and try to eke out 2x2 color data... 




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