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Triplet of clear nights = Triplet Galaxies!


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Finally a multi clear night run here on the coast! I love being able to leave everything set up for days and really getting some quality photons. This beautiful and favorite triple threat of mine is getting a bit to far west to image proper for me so I thought I'd give it a go now while I can. I was only able to get about 8-10 keepers a night with just about 40 minutes of imaging till a tree started showing but luckily those came out great. Not as clear as predicted but well worth the effort. I wanted about 40 pictures and was able to capture 25 keepers so I'll take it.

Lots of satellites showing up around this area of the sky just to make things interesting of course. Lost a few there. 

Here's the final results of the Leo Triplet. PHD2 guided 25-300 second lights @ ISO 800 15 darks 30 flats and 40 bias frames. Stacked in DSS and then levels abd curves in PS and a final tweek in LR

Let me know what you think of the processing.

 

Leo Triplet 25 frames final full (1 of 1).jpg

Edited by Leveye
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Looks good, and I know the pain of satellites in that area of the sky - especially when one has just buzzed through and spoilt a 900s sub... grrrr! :)

I've noticed the new version of Stellarium has included them as a matter of course, so you can actually see when/where youre going to get one of the blighters passing through your FOV.

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4 minutes ago, Uranium235 said:

Looks good, and I know the pain of satellites in that area of the sky - especially when one has just buzzed through and spoilt a 900s sub... grrrr! :)

I've noticed the new version of Stellarium has included them as a matter of course, so you can actually see when/where youre going to get one of the blighters passing through your FOV.

Your so right! Here's one with a triple dose in just one 300 second exposure. Grrr. I should be using that feature more thank you.

 

L_0001_ISO800_300s__28C.jpg

Edited by Leveye
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36 minutes ago, Uranium235 said:

Did you toss that sub? If you throw it on the pile and use sigma clipping it should eradicate those pesky blighters  ;)

 

I usually use median. I will try that now much appreciated!

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I never toss subs with sat trails. Using a good Sigma routine makes them vanish once you have about ten in a stack. Not all Sigma clips are equal. The one in AstroArt was simply transoformed between AA4 and AA5. I made the transition to V5 while imaging the Witch Head which is an area plagued by sats and V5 'disappeared' them perfectly. AA5 also has a 'remove line ' feature which does what it says once you have clicked on each end of the line. In a shorter stack it can be worth zapping the trails before stacking them.

I like your processing but wonder if the blue channel might not take a slight lift?

Olly

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1 hour ago, ollypenrice said:

I never toss subs with sat trails. Using a good Sigma routine makes them vanish once you have about ten in a stack. Not all Sigma clips are equal. The one in AstroArt was simply transoformed between AA4 and AA5. I made the transition to V5 while imaging the Witch Head which is an area plagued by sats and V5 'disappeared' them perfectly. AA5 also has a 'remove line ' feature which does what it says once you have clicked on each end of the line. In a shorter stack it can be worth zapping the trails before stacking them.

I like your processing but wonder if the blue channel might not take a slight lift?

Olly

This really helps. Thank you Olly! 

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