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NGC40 at three different magnifications

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#1 Jeff Young

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Posted 15 November 2009 - 07:14 PM

Since NGC40 presents such an interesting progressive disclosure as the magnification goes up, I thought I'd try to detail the changes in a series of sketches.

Posted over in the deep sky section.

Cheers,
-- Jeff.

#2 Jef De Wit

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Posted 16 November 2009 - 11:05 AM

Jeff
Nice sketches and an interesting discussion about filters... Here is a sketch of NGC40 made last year at x300 (without filter) with a 12" dobson. Looks almost the same than your sketch at x330, but I didn't catch the oval form.

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#3 Jeff Young

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Posted 16 November 2009 - 12:40 PM

Thanks, Jef. The pinched shape was just starting to become apparent to me at 335X, but I see Jay on the other thread noticed it at 140X. I'll blame it on age. ;)

Cheers,
-- Jeff

#4 JayinUT

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Posted 16 November 2009 - 12:54 PM

Jeff,

Excellent study and as always outstanding sketches. Having seen this recently I find I'm in a quandary to either slow down my Herschel observations or get through them and go back . . . There are many items I would like to sketch like NGC 663 (that would be an interesting study to compare 663 to M103 as I think 663 holds up well to M103) but I found I felt rushed in doing even a rough sketch so that I could get through the items for last night. Anyway, again nicely done for the fact you have me rethinking my approach to my own observing right now.

#5 Jeff Young

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Posted 17 November 2009 - 06:44 AM

Jay --

I keep some of the major lists active, but I don't work that hard at completing them. In fact, I don't even have all the Messiers logged (85 out of 110), and the H400 can be downright tedious in places (I currently have 167 out of 400).

Cheers,
-- Jeff.

#6 CarlosEH

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Posted 17 November 2009 - 10:31 AM

Jeff,

An excellent series of observations of NGC 40 at different magnifications showing more detail within the planetary nebula. Thank you for sharing them with us all.

Jef- An excellent observation of NGC 40 as well. A very interesting planetary nebula.

Carlos

#7 Jef De Wit

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Posted 18 November 2009 - 03:30 PM

Jeff
Congratulations with your ASOD!

#8 Jeff Young

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Posted 18 November 2009 - 05:09 PM

Thanks, Jef!

-- Jeff.


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