Arp Peculiar Galaxy Catalogue too faint for amateurs?

I have been looking at Arp's Atlas of Peculiar Galaxies Catalogue and
was considering adding it to my observing list. But I note that while
Clark's catalogue cuts-off the galaxies at around mag 12-13, Arp's
Catalgoue, which is based on plates from the Palomar Schmidt telescope
sky survey, drops down to mags 14-15 for typical 1 x 2 arcmin galaxies.


With a 10" is this too faint and should I not bother with it? Would
long-exposure astrophotograhy bring them within reach?

- Canopus56

Arp's Atlas
http://nedwww.ipac.caltech.edu/level5/Arp/frames.html

On 20 Nov 2005 17:26:31 -0800, "canopus56" wrote:

I have been looking at Arp's Atlas of Peculiar Galaxies Catalogue and
was considering adding it to my observing list. But I note that while
Clark's catalogue cuts-off the galaxies at around mag 12-13, Arp's
Catalgoue, which is based on plates from the Palomar Schmidt telescope
sky survey, drops down to mags 14-15 for typical 1 x 2 arcmin galaxies.

With a 10" is this too faint and should I not bother with it? Would
long-exposure astrophotograhy bring them within reach?

I can't comment on how suitable these objects are for visual observers,
but all are readily accessible to imagers with typical amateur equipment
(e.g. 10" scopes and cooled CCD cameras).

_________________________________________________

Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

Kurt (canopus56) wrote:
I have been looking at Arp's Atlas of Peculiar Galaxies Catalogue and
was considering adding it to my observing list. But I note that while
Clark's catalogue cuts-off the galaxies at around mag 12-13, Arp's
Catalgoue, which is based on plates from the Palomar Schmidt telescope
sky survey, drops down to mags 14-15 for typical 1 x 2 arcmin galaxies.

With a 10" is this too faint and should I not bother with it? Would
long-exposure astrophotograhy bring them within reach?

A ten-inch scope from dark skies should be able to reveal a 14th-
magnitude galaxy, so long as its surface brightness isn't too low (and
a size of a couple of square arcminutes suggests that it probably
wouldn't be). I'm pretty sure I've seen some like that in my ten-inch.

--
Brian Tung
The Astronomy Corner at http://astro.isi.edu/
Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.txt

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Brian Tung wrote:
Kurt (canopus56) wrote:
Arp's Catalgoue, which is based on plates from the Palomar Schmidt telescope
sky survey, drops down to mags 14-15 for typical 1 x 2 arcmin galaxies.
snip
Thanks to both you and Chris.

Long time exposures will bring almost anything within reach, if you expose long
enough and if your tracking holds up.

I'm not sure a 10-inch is too small to tackle these galaxies, however. Of
course you need to optimize everything in order to get some successes, but I
think you should try and observe them.

--- Dave
--
----------------------------------------------------------------------
Pinprick holes in a colorless sky
Let inspired figures of light pass by
The Mighty Light of ten thousand suns
Challenges infinity, and is soon gone




"canopus56" wrote in message
ups.com...
I have been looking at Arp's Atlas of Peculiar Galaxies Catalogue and
was considering adding it to my observing list. But I note that while
Clark's catalogue cuts-off the galaxies at around mag 12-13, Arp's
Catalgoue, which is based on plates from the Palomar Schmidt telescope
sky survey, drops down to mags 14-15 for typical 1 x 2 arcmin galaxies.


With a 10" is this too faint and should I not bother with it? Would
long-exposure astrophotograhy bring them within reach?

- Canopus56

Arp's Atlas
http://nedwww.ipac.caltech.edu/level5/Arp/frames.html