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IC 59

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#1 cildarith

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Posted 18 December 2009 - 12:35 PM

Object Name: IC 59
Also Known As: LBN 620, Sh2-185 North
Object Type: Emission + Reflection Nebula
Constellation: Cassiopeia
Right Ascension (2000.0): 00h 57m 28.6s
Declination (2000.0): +61° 08' 37"
Magnitude: —
Dimensions: 10' x 5'
Distance: 600 light years
Discovery: Isaac Roberts (January 17, 1890); also found by Max Wolf (December 30, 1893), and Edward Emerson Barnard (February 6, 1894)
NGC Description: pF, eL! (nf Gamma Cas)

Telescope: Parks Astrolight EQ6 • 6" f/6 Newtonian Reflector
Eyepiece/Magnification: 12mm Parks Kellner • 90x • 35' FoV
Filter: Lumicon UHC
Date/Time: 16 November 2009 • 04:00-04:45 UT
Observing Location: Oakzanita Springs, San Diego Co., CA
Transparency: NELM 6.4, TLM 14.2
Seeing: Pickering 7-8
Conditions: Clear, cold, dry, some wind

Sketching Materials: #2 pencil, artists' chamois, ink, original sketch size 7.5" circle on 100# card stock 8.5" x 11" sheet.

The 59th entry in the Index Catalogue to the NGC is a frustratingly faint fan of nebulosity withering in the intense glare of nearby Gamma Cassiopeiae. This star is, in fact, the source of illumination and ionization for this nebula and nearby IC 63. Even though IC 59 is plotted on almost every beginner's atlas or chart of Cassiopeia that I own, it is not an easy target and has eluded me several times in the past. This particular observation benefited from favorable site-specific and atmospheric conditions, namely high elevation and low humidity at a dark site. Averted vision and gentle east-west motion of telescope also assisted in obtaining glimpses of this elusive ghost. The Lumicon UHC filter was employed but its benefit (if any) was very minimal (IC 63 responded much more favorably to the filter). Keeping Gamma out of the field of view was also essential (excluding 6th magnitude HD 5459 from the field is also helpful). Through the 12mm Kellner IC 59 appears as a diffuse comet-like fan of nebulosity, extremely faint, but perceptibly brighter near the tip in the direction of Gamma. A small (14th magnitude) star is detected intermittently at the apex of the fan. A second, fainter, overlapping fan of nebulosity lies to the west. The surrounding star field is rich, particularly to the east. The brightest field star is blue-white HD 5342, glowing at eighth magnitude to the northwest.

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#2 Jeremy Perez

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Posted 18 December 2009 - 01:05 PM

Wow, what a great report and beautiful presentation in the sketch. Congratulations on the successful observation.

#3 cildarith

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Posted 18 December 2009 - 08:06 PM

Thanks Jeremy! :)

#4 frank5817

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Posted 19 December 2009 - 12:08 AM

Eric,

Superb. I have looked for and never see this nebula (IC 59). After you located it were you able to see IC 59 without a UHC filter? Great sketch and report. :bow: :cool:

Frank :)

#5 JayinUT

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Posted 19 December 2009 - 12:19 AM

Eric,

I'll echo Jeremy and Frank's comments. Outstanding report and tremendous sketch. BTW, I do like your sketching format that you use.

#6 cildarith

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Posted 19 December 2009 - 01:24 AM

Thanks Jay and Frank! :)

Frank, overall, the nebulosity was actually a little easier to see without the filter, but the UHC helped define the southern edge. Though IC 59 is cataloged as a combination of emission and reflection nebulae, the reflection component seems to dominate. The opposite is true of nearby IC 63.

The sketch is a combination of both the filtered and unfiltered views.

#7 Jef De Wit

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Posted 19 December 2009 - 06:09 AM

Eric, I've never heard of this object before. But you're beautiful sketch makes me to go out and observe it myself. Thanks.

#8 CarlosEH

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Posted 19 December 2009 - 08:08 AM

Eric,

An excellent observation of a faint nebulosity in Cassiopeia. You have captured this celestial ghost very nicely. Thank you for sharing it with us all.

Happy Holidays and a Happy New Year!

Carlos

#9 Uwe Pilz

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Posted 19 December 2009 - 09:48 AM

Dear Eric,
I tried to see IC 59 (and IC 63) many times, but I always failed. Eventually I gave up. Your sketch encouraged me to try it again. Thank you fort that.

#10 FJA

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Posted 19 December 2009 - 10:23 AM

Lovely sketch.
I'm hoping to get out tonight, clouds permitting, and I'll have a crack at this and IC 63. My skies are similar to yours Eric, and with my 12 inch I think I should see it.

#11 rerun

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Posted 19 December 2009 - 10:54 AM

Hi Eric,

a great sketching.:bow: I never saw this nebula,maybe my 4 " refractor is to small for this.But your sketching gives me a good impression how difficult it must be to observe this nebula.

CS

Markus

#12 cildarith

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Posted 19 December 2009 - 01:12 PM

Thanks for the remarks everyone! :)

Best of luck on your own searches for IC 59. Keep a list (even if it is just a mental note) of objects you've searched for and failed to find - and take a shot at them when you've got your scope pointed in their general area - your persistence may well be rewarded in time.

In this case, I had a list of open clusters in Cassiopeia I wanted to observe, noticed one of my long-standing nemeses on the chart, and took a detour between NGC 225 and NGC 381 for a quick look and was fortunate enough to come away with a successful observation.

#13 Jeff Young

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Posted 21 December 2009 - 04:22 PM

A very subtle and beautiful sketch, Eric. Well done!

I observed both IC59 and IC63 from NELM 5.5 skies (SQM 20.6) with a 16", but didn't get as much detail as Eric did (I couldn't see the fan shape, for instance). Like Eric, I found filters to be of little help (I tried both UHC and OIII).

I did find IC63 to be slightly easier than IC59, but I still didn't find a filter of much benefit.

Cheers,
-- Jeff.

#14 yann pothier

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Posted 22 December 2009 - 10:04 AM

Great sketch, a lot of details with a modest aperture ! Thanks a lot, can't wait for your IC 63 ! ;)

#15 cildarith

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Posted 22 December 2009 - 11:31 AM

Thanks Jeff and Yann! :)

Jeff, did you (by any chance) make a sketch of either object?

#16 yann pothier

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Posted 22 December 2009 - 04:26 PM

Eric, take a look at link

#17 cildarith

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Posted 22 December 2009 - 04:38 PM

Whoa, clean-up on aisle 15! :)

Thanks for the link Yann! Were you able to catch both of these with Gamma in the same field of view?

#18 FJA

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Posted 22 December 2009 - 05:56 PM

Fabulous sketches Yann. I had a go at these on Sunday night, but, apart from a subtle brightening, I failed to see much in the area.

#19 JumboFlex

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Posted 23 December 2009 - 02:42 AM

Most excellent sketch and accompanying write up. I've written this one down to go after if I get good seeing conditions, Im stuck in an area of near endless high humidity.

#20 Jeff Young

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Posted 23 December 2009 - 07:30 AM

Eric --

No, both observations were before I started sketching.

-- Jeff.

#21 yann pothier

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Posted 23 December 2009 - 08:30 AM

Eric> good question, I don't think so. Even if I was using a low power (74x) and Hbeta filter giving about 40' of true FOV, I believe that I kept Gamma out of the field to avoid distraction. My notes clearly states that it was a "multiple field" sketch, a kind of mosaic.






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