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Object near M45

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#1 m1618

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Posted 25 December 2013 - 03:55 AM

This is my 2nd M45 from the city 20sec ISO-1250. Thank you for those who suggested using a Bahtinov (spelling bee time) for focus. Stars are looking pointier.

I picked up a faint fuzzy on my subs and even when comparing with some other M45 pics out there from dark sites, I cannot see what I got circled here. What can it be? Anyone have another M45 to compare against?

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#2 Man in a Tub

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Posted 25 December 2013 - 04:37 AM

I don't how much this will help, but it will certainly show you that there are many distant galaxies behind the Pleiades. I will always be grateful to the members who replied in the Deep Sky Observing Forum — especially nytecam.

What catalogue for these galaxies in the Pleiades?

#3 Tonk

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Posted 25 December 2013 - 05:06 AM

You have rather severe vignetting in that image. I'd flat calibrate the image first and then see what you get.

#4 mmalik

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Posted 25 December 2013 - 05:41 AM

Comparing it against Neil's image of M45 processed by Scott... (hope ok to borrow a section of their image?), I don't see anything there. Equivalent area circled below:

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#5 Man in a Tub

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Posted 25 December 2013 - 06:09 AM

I see nothing in the DSS POSS2 Blue.

#6 Tonk

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Posted 25 December 2013 - 07:12 AM

The first thing to suspect in puzzles like this is internal reflections off your optics when imaging very bright stars.

Take another frame with the framing slightly different. If the object is still present but also shifted wrt the background stars then you have an internal reflection

#7 patrick2874

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Posted 25 December 2013 - 07:56 AM

Its definatley a cloaked romulan warbird

#8 m1618

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Posted 25 December 2013 - 12:40 PM

Guilty. I'm processing images on Christmas morning :)
Just for comparison, I've attached my attempt at the Rosette (or wherever my mount told me Cald 49 should be). It was curved severely to try and expose a similar faint fuzzy to see if it was something off the SN6 corrector or camera. Nothing there. Yes, I better learn about flat calibration and vignetting though (any good links?).

Urban astrophotography with street lights and corrector plates capturing/bouncing stray light...not some new comet or romulan warbird. :) But maybe.

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