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This is an image of UGC 5829, a little-studied and even less-frequently photographed galaxy.? It¡¯s about 30M light-years away in the direction of Leo Minor.? It¡¯s classified as an irregular galaxy, akin to the Magellanic Clouds, and has enough gas to support active star formation.? The galaxy has a low surface brightness, so it benefits from dark skies and longer integration times. The sobriquet of ¡°spider galaxy¡± was actually introduced by professional astronomers on the basis of images obtained from a few sky surveys.? The surrounding field of view is filled with distant galaxies, they¡¯re all over the place.? I¡¯ve rotated the target by 90 degrees to make it look a little more ¡°spidery¡±.
The image was captured during 5 nights in March-April 2024 from SkyPi Remote Observatory using a 12.5" PlaneWave scope and a QSI-640ws camera at f/8 for a final LRGB integration of 18.7 hours. Thanks for looking, Bruce W. |
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Very nice indeed, Bruce and as you say rarely photographed - first time I've seen it. Thank you and well done!
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But much as I'd like to put it on my 'Must do' list, at mag 13.5 and very faint surface brightness mag 16.6 I'd be hard pressed to image it from my NE England location. Particularly as you spent 5 nights on it from your dark remote Observatory - this season I've only had 9 clear Moon free nights since Christmas to capture 5 targets :-( Cheers, Peter. Approx. 55 deg N, 2 deg W (Northumberland, UK) On 16/04/2024 03:35, bw via groups.io wrote:
This is an image of UGC 5829, a little-studied and even less-frequently photographed galaxy.? It¡¯s about 30M light-years away in the direction of Leo Minor.? It¡¯s classified as an irregular galaxy, akin to the Magellanic Clouds, and has enough gas to support active star formation. The galaxy has a low surface brightness, so it benefits from dark skies and longer integration times. The sobriquet of ¡°spider galaxy¡± was actually introduced by professional astronomers on the basis of images obtained from a few sky surveys.? The surrounding field of view is filled with distant galaxies, they¡¯re all over the place.? I¡¯ve rotated the target by 90 degrees to make it look a little more ¡°spidery¡±. |
¿ªÔÆÌåÓýBruce,
Very nicely done and like Peter, I think this is the first time I¡¯ve seen an image of this target, which is perhaps a little surprising, as it got some interesting features. I also agree with Peter, that it would
be a challenging target from the UK, so perhaps that's one of the reasons I've not seen it previously.
Regards,
Geof From: [email protected] <[email protected]> on behalf of Peter Vasey <petevasey@...>
Sent: Tuesday, April 16, 2024 9:46 am To: [email protected] <[email protected]> Subject: Re: [QSI-CCD] UGC 5829, the "spider" galaxy ?
Very nice indeed, Bruce and as you say rarely photographed - first time
I've seen it.? Thank you and well done! But much as I'd like to put it on my 'Must do' list, at mag 13.5 and very faint surface brightness mag 16.6 I'd be hard pressed to image it from my NE England location.? Particularly as you spent 5 nights on it from your dark remote Observatory - this season I've only had 9 clear Moon free nights since Christmas to capture 5 targets :-( Cheers, Peter. Approx. 55 deg N, 2 deg W? (Northumberland, UK) On 16/04/2024 03:35, bw via groups.io wrote: > This is an image of UGC 5829, a little-studied and even less-frequently > photographed galaxy.? It¡¯s about 30M light-years away in the direction > of Leo Minor.? It¡¯s classified as an irregular galaxy, akin to the > Magellanic Clouds, and has enough gas to support active star formation.? > The galaxy has a low surface brightness, so it benefits from dark skies > and longer integration times. The sobriquet of ¡°spider galaxy¡± was > actually introduced by professional astronomers on the basis of images > obtained from a few sky surveys.? The surrounding field of view is > filled with distant galaxies, they¡¯re all over the place.? I¡¯ve rotated > the target by 90 degrees to make it look a little more ¡°spidery¡±. > > The image was captured during 5 nights in March-April 2024 from SkyPi > Remote Observatory using a 12.5" PlaneWave scope and a QSI-640ws camera > at f/8 for a final LRGB integration of 18.7 hours. > > > <> > > Thanks for looking, > Bruce W. > |
Geof Lewis