Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Some seasonal PNs, not very much observed

  • Please log in to reply
6 replies to this topic

#1 bertandlaville

bertandlaville

    Mariner 2

  • -----
  • topic starter
  • Posts: 214
  • Joined: 05 Sep 2005
  • Loc: marseille / france

Posted 28 February 2020 - 04:27 AM

Hi All,

 

A very warm new moon in my southern Alps, and also very dark, allowed me to point at, observe, and sketch some PNs.

All sketches with 25" Obsession, SQML 21.8 to 22.06 (!), NELM 7.0 to 7.44v.

Reports are here: http://www.deepsky-drawings.com/, then the number of the object in the window "advanced search"

 

Clear sky

Bertrand

 

 

Attached Thumbnails

  • IC 351  T635  BL 2020 02 23.jpg
  • IC 2003  T635  BL 2020 02 23.jpg
  • IC 2165  T635 BL 2020 02 23.jpg
  • NGC 2346  T254 vs T635 BL.jpg

  • frank5817, Jef De Wit, steve t and 7 others like this

#2 pyrasanth

pyrasanth

    Gemini

  • *****
  • Posts: 3,105
  • Joined: 08 Jan 2016

Posted 28 February 2020 - 05:31 AM

Interesting details from a visual perspective. Do you see the greenish colour as shown in the drawings.?

 

I'm always curious to learn what colours can be seen visually especially on relatively bright objects like PN's (lots of magnitude focused in a small area)

 

Let me know if you have observed colour through your larger telescopes.



#3 Asbytec

Asbytec

    Guy in a furry hat

  • *****
  • Posts: 17,335
  • Joined: 08 Aug 2007
  • Loc: Pampanga, PI

Posted 28 February 2020 - 05:53 AM

Wow, I find your NGC 2346 nice in comparison. I am gonna look at the others tonight, I hope. 

 

NGC 2346.png


  • frank5817, steve t and Astrojedi like this

#4 bertandlaville

bertandlaville

    Mariner 2

  • -----
  • topic starter
  • Posts: 214
  • Joined: 05 Sep 2005
  • Loc: marseille / france

Posted 28 February 2020 - 06:30 AM

All these 4 PNs were seen blueish and not greenish.

The color was C130 in the square of colors, and concentration was S15 for NGC 2165, up to S40 to NGC 2346.

Colors are usual in my 25": red for H alpha, greenish +/- blueish, depending on percentage of Hbeta and or OIII lines.

Of course, the brighter the target, the better the colors.

 

Bertrand

http://www.deepsky-drawings.com/



#5 niteskystargazer

niteskystargazer

    Cosmos

  • *****
  • Posts: 7,853
  • Joined: 05 Oct 2009
  • Loc: 41-43'-28" N 87-42'-39" W

Posted 28 February 2020 - 02:27 PM

Bertrand,

 

Nice sketches of Some seasonal PNs, not very much observed smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#6 frank5817

frank5817

    Voyager 1

  • *****
  • Moderators
  • Posts: 14,924
  • Joined: 13 Jun 2006
  • Loc: Mesa, Arizona

Posted 28 February 2020 - 10:48 PM

Bertrand,

 

The first 3 PNs here with the large scope show a great amount of detail.

All of these sketches are impressive.

 

Frank :)



#7 Ivan Maly

Ivan Maly

    Vostok 1

  • -----
  • Posts: 118
  • Joined: 08 Mar 2014

Posted 29 February 2020 - 10:00 AM

Very nice. I too noticed that the real dark has returned, first time since September or so. 22+ is absolutely awesome; we just had the normal 21.7 back last week. Of these, I have seen the NGC, though not in such detail (with my old 12).




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics