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Sculptor Galaxy (NGC 253)

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Posts Made By: Dmitri Kulginov

September 3, 2005 08:50 AM Forum: Equipment Talk

Simple pleasures...

Posted By Dmitri Kulginov

Last time I scanned star fields, it started raining on me - from nowhere! Just a couple of small cloudds overhead.

Dmitri

September 3, 2005 09:37 PM Forum: Equipment Talk

Simple pleasures...

Posted By Dmitri Kulginov

David,

Thanks for this session:
http://www.astromart.com/forums/viewpost.asp?forum_post_id=364558&poll_id=&news_id=

Dmitri

September 4, 2005 08:33 PM Forum: Deep Sky Observing

Star cluster patterning?

Posted By Dmitri Kulginov

Stars are born from dust and gas compressed by shock waves from gravitation or supernovae explosions. This means that they are born mostly on two-dimentional surfaces. Projection of folds of smooth surfaces makes lines. Interestingly, these lines can be easily classified. This classification is one of the subjects of the catastrophe theory (pure geometry, despite its name). One perfect example is Dolidze 36 with its star chain in the shape of whiskers. Another example of these lines are caustics caused by refraction/reflection of light in drinking glasses or telescope optics.

Formation of galaxies follows more or less similar principles (that's why they are flat during their early stages).

Dmitri

September 8, 2005 01:53 PM Forum: Deep Sky Observing

Finding NGC7293 Helix Nebula?

Posted By Dmitri Kulginov

That was exactly my experience last summer. I think it is larger and fainter than I expected; also, a filter would have helped. A good recipe is to keep trying because your skills are growing and seeing/transparency change night after night.

Dmitri

September 9, 2005 09:18 AM Forum: Equipment Talk

best grease for worm gears?

Posted By Dmitri Kulginov

Probably any black graphite based grease.

Dmitri

September 30, 2005 10:39 AM Forum: Deep Sky Observing

9-26-05/9-29-05

Posted By Dmitri Kulginov

Zack,

After a few minutes I could see very long jets extending from each end.

Are you describing the tilted disc itself or the spiral arms? Have you tried to relate to any image of 7331?

Dmitri

October 10, 2005 09:27 PM Forum: Beginning Astronomy?

Panoptics - Worth the price for a beginner?

Posted By Dmitri Kulginov

If you can sell your non-Panoptics later, it is better to start with them - just to be able to fully appreciate how good the Panoptics are!

Dmitri

October 11, 2005 02:32 PM Forum: Deep Sky Observing

10-8-05

Posted By Dmitri Kulginov

Zack,

You might not get many replies to your reports, but I'm sure a lot of people enjoy reading them (myself among them). Please keep posting!

There's nothing like a good observing report while you're away from your gear.

Dmitri

October 22, 2005 06:40 PM Forum: Solar System Observing

Light Cup settled Mare Crisium controversy

Posted By Dmitri Kulginov

Looks like an iguana to me.

Dmitri

October 28, 2005 09:39 AM Forum: Deep Sky Observing

Photographic representation of visual experience

Posted By Dmitri Kulginov

One thing that is never reproduced in its real visual splendor on the colour photos are globular clusters. I never see that shimmering star dust on CCD images. There might be more stars on a photo, but the eyepiece view is always better, even in a modest aperture.

Open clusters, yes; galaxies, yes; diffuse nebulae - [ almost ] always overblown... Globulars - never.

Dmitri