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Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing

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m1618
sage
*****

Reged: 09/18/12

Loc: Orange County - CA
Object near M45
      #6271682 - 12/25/13 03:55 AM Attachment (20 downloads)

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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Man in a Tub
Postmaster
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Reged: 10/28/08

Loc: Fogpatch, CA
Re: Object near M45 new [Re: m1618]
      #6271707 - 12/25/13 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?


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Tonk
Postmaster
*****

Reged: 08/19/04

Loc: Leeds, UK, 54N
Re: Object near M45 new [Re: Man in a Tub]
      #6271719 - 12/25/13 05:06 AM

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

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mmalik
Postmaster
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Reged: 01/13/12

Loc: USA
Re: Object near M45 new [Re: m1618]
      #6271735 - 12/25/13 05:41 AM Attachment (11 downloads)

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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Man in a Tub
Postmaster
*****

Reged: 10/28/08

Loc: Fogpatch, CA
Re: Object near M45 new [Re: mmalik]
      #6271743 - 12/25/13 06:09 AM

I see nothing in the DSS POSS2 Blue.

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Tonk
Postmaster
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Reged: 08/19/04

Loc: Leeds, UK, 54N
Re: Object near M45 new [Re: Man in a Tub]
      #6271766 - 12/25/13 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


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patrick2874
member


Reged: 02/05/13

Loc: memphis,tn.
Re: Object near M45 new [Re: Tonk]
      #6271799 - 12/25/13 07:56 AM

Its definatley a cloaked romulan warbird

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m1618
sage
*****

Reged: 09/18/12

Loc: Orange County - CA
Re: Object near M45 new [Re: patrick2874]
      #6272142 - 12/25/13 12:40 PM Attachment (6 downloads)

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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