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M45 - Pleiades

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#1 abcdefghii

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Posted 14 October 2021 - 09:40 AM

Somewhat clear sky last night, so decided to try M45. I have never imaged this before, tried a couple weeks ago but all the subs were junk. Gave it another shot last night and pretty happy with the result.

 

M45.jpg

 

45 x 300s lights

22 x darks

20 x flats

20 x bias

 

Nikon D5600 - Stock

AT102EDL

CEM25P

 

Processed in Siril, then touched up a little in Photoshop.

 

Something I noticed and am not sure how happened, is there appear to be diffraction spikes on all of the stars at 8pm and 2pm, I don't know what caused them and not sure if I like them. 

 

C&C welcome. 


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#2 chanrobi

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Posted 14 October 2021 - 09:46 AM

That is weird, should be no diffraction spikes with that scope

 

Good image though


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#3 matt_astro_tx

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Posted 14 October 2021 - 10:31 AM

Man that turned out great!  Congrats!


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#4 asanmax

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Posted 14 October 2021 - 01:12 PM

Beautiful! Lots of detail.


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#5 abcdefghii

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Posted 14 October 2021 - 01:33 PM

That is weird, should be no diffraction spikes with that scope

It is weird, I've never encountered them before. They are even on the left / right of the stars, so it's not trailing as far as I can tell. I half wonder if it is something stupid like a spider pulled a strand of web across at some point. To the left of where I set up was a spider web, but at the same time I am not sure if it would have been thick enough to be picked up by the camera. 



#6 Tim J Fowler

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Posted 14 October 2021 - 08:35 PM

At 8pm and 2pm? Not sure I understand. They're corner to corner. Otherwise nice M45.

#7 abcdefghii

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Posted 15 October 2021 - 08:15 AM

At 8pm and 2pm? Not sure I understand. They're corner to corner. Otherwise nice M45.

If you picture the center of the star as the center of a clock, the 8 and 2 are where the clock hands would be for the diffraction. Here's a crop at 100% to show them in more detail, I circled one in red to illustrate a little more what I mean.

 

M45.jpg

 

They're certainly not the end of the world, was just surprised to see them. 


Edited by abcdefghii, 15 October 2021 - 08:16 AM.



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