NGC 2392 - now in color

Dietmar · #1 12-01-2008, 03:51 AM

hi guys,

o.k. here we are:
I have tried to kind of match the distorted and differently bended
rgb files with the luminance result I have posted recently.
I had to this in photoshop,...it was hard,...but it worked fairly
enough to present this l-rgb version here.

data:
luminance:
9"f/18 TMB Apo using televue big bralow
SXVF H36 - crop (as I told you less than 50% remained...it'S the
files issue that I will have to solve with a decent flattener...

l = 18x4 minutes
7 dark frames
r,g,b 9"f/9 5x4 minutes each.
maxim color calibration:
r=1.3
g=0.8
b=1.1

this was trial and error stuff, since I will have to do a G2V star
color balancing with the entire system...

http://www.stargazer-observatory.com/NGC2392-LRGB.html

thanks for taking a look.
Dietmar

AJames · #2 12-01-2008, 05:39 AM

Dietmar. Love the image of the Eskimo Nebula - though being Summer is probably the last thing to think of, don't you think?

I have attached an observational description of NGC 2392 for you and IIS bloggers, which might be of some interest.

NGC 2392 / Eskimo Nebula / Sa2-5 / M 1-10/ PK 197+17.1 / PNG 197.8+17.3 (07h 29.2m+20 deg 53') is a bright PNe in Gemini discovered by William Herschel in 1787, who called it "remarkable phenomenon" - and still is! It is far more spectacular than Gemini’s other bright PNe which is some 8 degrees further north. Known as the Eskimo Nebula because of its obvious facial characteristic, it is likely in the Top 10 of all the planetaries in the sky. NGC 2392 lies very near the ecliptic by about 2.2 degrees South, and therefore can be occulted by the Moon (though I have never heard of someone see this!!) or have planets and asteroids near its position.

The PNe is also easy to find - some 2.3 degrees ESE from yellow 3.5 magnitude Delta Geminorum / 55 Gem / Wasat (07201+2159). At 9.1v (9.9p) magnitude is a surprisingly bright, and subtends the diameter of 19.5 arcsec. Classification is given as a equally double "3b+3b". Unusually, the central star is very bright at 10.5 magnitude - especially unusual among their kind. few objects surround this PNe.

AOST2 describes NGC 2392 as;

“A fine pale blue planetary nebula about 30" across with a conspicuous central star of magnitude 10.5 in a good contrasting field. The single elliptical prism image with central star streak is very clear, even in 7.5cm... ...called the Eskimo nebula, after its resemblance to a hooded face on photographs.”

This is a nice PNe whatever hemisphere you are in!

Regards,
Andrew

Alchemy (Clive) · #3 12-01-2008, 11:38 AM

that is a first class image, well done.

Rodstar (Rod) · #4 12-01-2008, 12:12 PM

Quote:

Originally Posted by AJames

Dietmar. Love the image of the Eskimo Nebula - though being Summer is probably the last thing to think of, don't you think?

Regards,
Andrew

I think Dietmar will find the Eskimo Nebula perfectly suited to the winter he is experiencing in Austria.

Dietmar, that is a seriously impressive image. I am truly amazed as your efforts. That is some serious gear you have got there. I would love to do some visual observing in your scope!

AJames · #5 12-01-2008, 12:49 PM

Quote:

Originally Posted by Rodstar

I think Dietmar will find the Eskimo Nebula perfectly suited to the winter he is experiencing in Austria.

Oops!! Didn't notice the location... Scanned the "Aust..." bit, and thought it was Australia! I'll add a few extra ice cubes to to my drink to show a bit better respect. Though with Global Warming currently on the rampage, I suspect that any Eskimos in the Arctic may need swimming lesson fairly soon!

Still, it is a great image!

tornado33 · #6 12-01-2008, 01:19 PM

Very nice shot. Not often you see deep sky imaging at f18! First class tracking and focus there.
Scott

monoxide · #7 12-01-2008, 09:12 PM

excellent shot!
i'd love to see a few more like this

sheeny (Al) · #8 12-01-2008, 09:22 PM

Wow! Excellent work and the colours make it look like such an unusual object! I see where the name comes from though!

Al.

h0ughy (David) · #9 12-01-2008, 10:46 PM

wow - fantastic image - certainly a proud moment when you finished processing the image

Dietmar · #10 12-01-2008, 11:06 PM

...thanks Andrew, Alchemy, Rod, Scott, Al and Houghy.
Rod,...just catch a plane...and your skies...(:

EzyStyles (Eric) · #11 13-01-2008, 01:49 AM

great shot Dietmar! thats probably one of the best image i have seen of the eskimo. F18 nicee

netwolf · #12 13-01-2008, 02:13 AM

Fantastic image, just amazing like all your other images. Are you sure your not using the Hubble Telescope?

Dietmar · #13 13-01-2008, 04:12 AM

thanks Netwolf and Eric.
I wish HST would head my calls...

rumples riot · #14 20-01-2008, 01:02 AM

Dietz this is a stunning image, just found this and I am really impressed. Mind you, you have a great scope for this sort of thing. Well done.

avandonk · #15 21-01-2008, 08:52 AM

Dietmar it is a stunning image. Do you have RegiStar? It is a simple matter for RegiStar to make all your exposures identical as it wiill correct any distortions to the starting or reference image. It will do this even for different focal lengths.

If you could put up two images (or more) that are the most different I will show you what can be done.

Again a lovely image.

Bert

Dietmar · #16 22-01-2008, 08:34 AM

...thanks Paul and Bert!

Ric · #17 22-01-2008, 02:34 PM

WooHoo Dietz, how impressive is that.
You have done a fantastic job with this one

Cheers

edwardsdj (Doug) · #18 22-01-2008, 02:38 PM

That is the most detailed image I've seen of the Eskimo.

Incredible result

marc4darkskies (Marcus) · #19 23-01-2008, 01:08 PM

WOW Dietmar! How did I miss this one! ... Fantastic!!

By the way, how much did you say you wanted for your scope?

Cheers, Marcus

Dietmar · #20 24-01-2008, 09:23 AM

...thanks a lot Ric, Doug and Marcus!