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NGC 40 in Cephus using 24 inch Newtonian at 400X

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#1 stevecoe

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Posted 14 September 2013 - 06:29 AM

Howdy all;

I am just learning how to use Photoshop Elements 11. This drawing was orginally made with charcoal pencil. After cleaning it up in Photoshop I reversed it to white on black background.

The drawing was made with a friend's 24 inch at 400X. It was made on a night high above Grand Junction, Colorado. At 8400 feet of altitude I rated the night at 8 out of 10 for both seeing and transparency. A very special night indeed.

Clear skies to us all;
Steve Coe

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#2 aatt

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Posted 14 September 2013 - 07:45 AM

Looks like I am going to have to get a 24"......

#3 David Knisely

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Posted 14 September 2013 - 12:52 PM

I have seen the brighter opposing sides of NGC 40 in my 10 inch using the NPB filter. This is one of the few planetaries in the sky that responds to the H-beta filter, although I still like the view in a narrowband filter a little better. Clear skies to you.

#4 stevecoe

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Posted 14 September 2013 - 02:55 PM

David;

The two bright area have always looked like polar caps to me. There is certainly plenty to see here.

Steve Coe

#5 youngamateur42

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Posted 14 September 2013 - 06:23 PM

Steve, your sketches are always a pleasure to look at, great job!

#6 davidpitre

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Posted 14 September 2013 - 10:35 PM

Very nice sketch Steve. Thanks for sharing.

#7 Rich (RLTYS)

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Posted 15 September 2013 - 06:54 AM

I just recently imaged NGC 40 and your sketch is spot on. :jump: :bow:

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#8 stevecoe

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Posted 16 September 2013 - 01:40 AM

Young am, David, Rich, et al;

Thank you for the nice words, I appreciate it. The combination of some drawing skills and Photoshop Elements 11 once I have the drawing scanned into the computer is very powerful. I am just learning, there is plenty to do and keep busy for lots of time to come. I am pleased with the results so far.

Clear skies to us all;
Steve Coe

#9 Kraus

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Posted 16 September 2013 - 09:40 AM

Looks like I am going to have to get a 24"......


Me too.

And the sketch is a beauty. Oh Ms. Carol. Looky.

#10 galaxyman

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Posted 17 September 2013 - 08:53 AM

Terrific drawing and observation Steve.

Ngc 40 is one of those planetary nebula gems that respond so well to higher magnifications and good sky conditions.


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#11 Starman1

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Posted 26 September 2013 - 03:41 PM

My notes:
12.5" 304X SQM 21.43
Seeing 9/10
Transparency 9/10
are that one arc is a little brighter than the other. And your drawing shows that wonderfully.
My notes also indicate the faint edges (in between the arcs) are "wooly", meaning irregular and somewhat blobby. You can kind of make it out in your drawing.

If you get a chance again, try NGC1514 in Taurus. It is spectacularly detailed. First, it's slightly purple (bluer than NGC40) and second, the inner parts are divided into "petals", sort of like a pansy. It'll take you longer to draw, though.

Great drawing of NGC40!

#12 stevecoe

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Posted 27 September 2013 - 01:08 AM

Don;

How does one draw "blobby"??

Maybe use a sponge to blob the charcoal?

It seems to always be a problem getting the detail in very detailed deep sky objects to come out like I seem in the eyepiece. I am glad that you appreciate the NGC 40 drawing, it took a while.

Clear skies to us all;
Steve Coe

#13 David Knisely

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Posted 27 September 2013 - 01:34 AM

I observed it again last night just as the moon was rising (I hadn't been paying as much attention to what my Nexus 7 and Sky Safari Pro had told me about when the moon would come up as I should have). In the NPB filter at 384x, it appeared as an nearly round disk with the usual opposing east and west sides that were somewhat brighter (west side maybe a hair brighter than the east side). I didn't really see much of the "gaps" shown in the drawing, as the filter tends to fill that area in with faint nebulosity. With the moonlight and the less than perfect seeing, I didn't try for the outer wisps off the north and south edges, but the main area with the prominent bright arcs looked almost round. Clear skies to you.

#14 stevecoe

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Posted 27 September 2013 - 08:18 AM

David;

Yes, the darned Moon does get in the way sometimes.

Is the NPB similar to the UHC filter? Same kind of narrowband filtering? If I remember it is from Europe.

Clear skies;
Steve Coe

#15 SStoffer

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Posted 28 September 2013 - 02:01 PM

I observed NGC 40 last night for the first time, and it appears as a near circular, misty cloud around the central star, between two magnitude 10 stars. Kind of reminds me of M13. No color was observed in my 12 inch reflector. Why not?

I can't believe I forgot to use the Baader UHC filter. Still, a very nice object.

-Stephen

#16 Starman1

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Posted 28 September 2013 - 05:54 PM

I observed NGC 40 last night for the first time, and it appears as a near circular, misty cloud around the central star, between two magnitude 10 stars. Kind of reminds me of M13. No color was observed in my 12 inch reflector. Why not?

I can't believe I forgot to use the Baader UHC filter. Still, a very nice object.

-Stephen

It has too low a surface brightness to activate the cones in your eye.
Sometimes, with a nebula filter that has a strong red transmission, some people can see a slight reddish tint (reddish-grey, that is) at low power in bigger scopes.
Next time, try a higher power. This one really shines at 300X and more.
And try your filter, of course. It's a broadband, but it will still help.

#17 David Knisely

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Posted 29 September 2013 - 02:08 AM

David;

Yes, the darned Moon does get in the way sometimes.

Is the NPB similar to the UHC filter? Same kind of narrowband filtering? If I remember it is from Europe.

Clear skies;
Steve Coe


Nope, Steve, the NPB is from the good old US of A. It is the DGM Optics NPB ("narrow pass band") filter, and has characteristics similar to that of the Lumicon UHC, Orion Ultrablock, and Thousand Oaks Narrowband LP-2 filters. It is actually produced by Omega Optical (Brattleboro, Vermont). For NGC 40, I like the NPB best, as the object has comparable amounts of OIII and H-Beta emission. The H-Beta line in NGC 40 is actually somewhat stronger than the OIII lines and the nebula also has booming red H-alpha/NII emission lines which in larger scopes might be visible in the NPB filter (the NPB has a red secondary passband). However, the H-beta filter also helps this object (one of the few planetaries that is helped by the H-Beta), so sometime, you might want to try that filter on the object to see what happens. Clear skies to you.

#18 stevecoe

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Posted 29 September 2013 - 05:12 AM

David;

Thanks for the info, I think I may give the NPB a try. There aren't enough targets for the H Beta, I just don't have the money to experiment right now.

Glad to see that it is from the USA.

Clear skies;
Steve Coe

#19 David Knisely

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Posted 29 September 2013 - 06:26 AM

David;

Thanks for the info, I think I may give the NPB a try. There aren't enough targets for the H Beta, I just don't have the money to experiment right now.

Glad to see that it is from the USA.

Clear skies;
Steve Coe


Well, as for "not enough targets".....

. . . . . . . . USEFUL TARGETS FOR THE H-BETA FILTER . . . . . . . .

While the H-Beta is probably one of the less-used nebula filters, the commonly expressed idea that it works only on a handful of objects is not necessarily true. Here is a list of some of the more prominent objects that the H-Beta may be at least somewhat useful on. Some may require larger apertures (and some may be slightly better in other filters), but a few have been seen from a dark sky site by just holding the filter up to the unaided eye and looking at the sky. Some of these will also be helped by a narrow-band filter like the Lumicon UHC.

1. IC 434 (HORSEHEAD NEBULA)
2. NGC 1499 (CALIFORNIA NEBULA, naked eye and RFT)
3. M43 (part of the Great Orion Nebula)
4. IC 5146 (COCOON NEBULA in Cygnus)
5. M20 (TRIFID NEBULA, main section)
6. NGC 2327 (diffuse nebula in Monoceros)
7. IC 405 (the FLAMING STAR NEBULA in Auriga)
8. IC 417 (diffuse Nebula in Auriga)
9. IC 1283 (diffuse Nebula in Sagittarius)
10. IC 1318 GAMMA CYGNI NEBULA (diffuse nebula in Cygnus)
11. IC 2177: (Diffuse Nebula, Monoceros)
12. IC 5076 (diffuse nebula, Cygnus)
13. PK64+5.1 "CAMPBELL'S HYDROGEN STAR" Cygnus (PNG 64.7+5.0)
14. Sh2-157a (small round nebula inside larger Sh2-157, Cassiopeia)
15. Sh2-235 (diffuse nebula in Auriga).
16. Sh2-276 "BARNARD'S LOOP" (diffuse nebula in Orion, naked eye)
17. IC 2162 (diffuse nebula in northern Orion)
18 Sh2-254 (diffuse nebula in northern Orion near IC 2162)
19. Sh2-256-7 (diffuse nebula in northern Orion near IC 2162)
20. vdB93 (Gum-1) (diffuse nebula in Monoceros near IC 2177)
21. Lambda Orionis nebular complex (very large, naked-eye)
22. Sh2-273 "Cone" Nebula portion around cluster NGC 2264

In addition, a number of the brighter nebulae like NGC 7000 or M42 will respond to H-Beta use for revealing certain specific detail, although other filters may provide a somewhat better view overall.

Clear skies to you.






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