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  1. #1
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    Default Help with a star



    So last night I spent over an hour trying to locate and sketch my A Position for Kalliope (22) in Gemini. It was an awesome star hop through Gemini from naked eye to my 30mm to HD50205. But SkySafari 5 showed this one star (GSCII N22223120-6018) which claims to be a mag 11.53 in the vicinity. The surrounding stars were all 11.2 so the pattern I was looking at through the ep should have clearly seen this star. I tried rotating, compensating for alignment, that star was not there. It wasn't clouds, I viewed for just shy of any hour in clear skies. It isn't there. This wouldn't be the first time I've found inconsistencies in the SkySafari DB. I always research the anomalies after the fact, and cannot find any data on this star. I've been to the GSC-2 page and searched the RA/dec to no avail. Simbad is using 2000 data, SkySafari reports 2016.9, so a coordinate search is pointless out there.

    I've tried these two versions of the identifier:
    GSCII N22223120-6018
    GSC-II N22223120-6018

    I've also tried the coordinate search, just for grins:
    (2016.9)
    RA: 06:54:36.73
    Dec: +30:17:23.5

    06:54:36.73+30:17:23.5

    This is one of the sites I was looking at:
    GSC2

    Here is a screen shot of the pesky star from SkySafari.
    IMG_1335.JPG

    It wasn't until my teeth began chattering that I decided to ignore the missing star and then everything lined up perfectly.

    Any ideas on how I can find more info on this star?
    Glen | N1XF
    Scopes: Zhumell Z10, Explore Scientific AR102, Explore Scientific 16" Truss Tube Dob Gen2
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  2. #2
    PhotoBiker's Avatar
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    Default Re: Help with a star

    I've also tried GSC2.2 and GSC2.3 at Simbad.
    Glen | N1XF
    Scopes: Zhumell Z10, Explore Scientific AR102, Explore Scientific 16" Truss Tube Dob Gen2
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  3. #3
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    Default Re: Help with a star

    Found part of it on VizieR:
    VizieR

    It's missing the -6018 extension though. I did search for the entire designation.

    This hit isn't in the correct locations n though.
    Glen | N1XF
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  4. #4
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    Default Re: Help with a star

    Have you tried looking on stellarium to check / cross reference your other sources - you can download extra data to get star info down to about mag 16 or so I believe. You never know you might have found a variable.
    When sketching I once found a star that according to sky X wasn't there! Unfortunately I didn't investigate further and now can't remember which sketch it was on. I wish now that I had been a bit more determined.
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  5. #5
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    Default Re: Help with a star

    Quote Originally Posted by pushrod View Post
    Have you tried looking on stellarium to check / cross reference your other sources - you can download extra data to get star info down to about mag 16 or so I believe. You never know you might have found a variable.
    When sketching I once found a star that according to sky X wasn't there! Unfortunately I didn't investigate further and now can't remember which sketch it was on. I wish now that I had been a bit more determined.
    I tried cross checking with Stellarium which for some reason is not showing the ID. I have catalogs for stars down to 18 mag. I've also tried C2C and have some luck.
    Glen | N1XF
    Scopes: Zhumell Z10, Explore Scientific AR102, Explore Scientific 16" Truss Tube Dob Gen2
    Eyepieces: 40mm, 30mm, ES (82°) 24mm (on the way), 14mm, 8.8mm, 6.7mm, 4.7mm, Zhumell 8-24 Zoom
    Binoculars: Oberwerk 11x70, Canon 10x30IS, Nikon 16x60

 

 

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