Re: (IAAC) Obj: Jonkherre 900 (PK 194+2.1) - Inst: 13" f/5.6 dob
> From R. Jonckheere PN
Steve where did you find a copy of this catalog ? I saw a reference to it
in S&T but a web search didn't turn it up.
> From: Steve Coevia Lew Gramer <email@example.com>
> To: Internet Amateur Astronomers Catalog <firstname.lastname@example.org>
> Subject: (IAAC) Obj: Jonkherre 900 (PK 194+2.1) - Inst: 13" f/5.6 dob
> Date: Tuesday, October 27, 1998 4:19 PM
> Observer: Steve Coe
> Your skills: Advanced (many years)
> Date/time of observation: Not specified.
> Location of site: Not specified.
> Site classification: Rural
> Sky darkness: 8 <1-10 Scale (10 best)>
> Seeing: 8 <1-10 Seeing Scale (10 best)>
> Moon presence: None - moon not in sky
> Instrument: 13" f/5.6 dob
> Magnification: 100X, 285X
> Filter(s): None
> Object(s): Jonkherre 900 (PK 194+2.1)
> Category: Planetary nebula.
> Class: 3b+2
> Constellation: Gemini
> Data: mag 12 size 12"x10"
> Position: RA 06:25.9 DEC +17:47.2
> I have observed J 900 once with the 13" f/5.6 while at
> a rural site on a night I rated 8/10 for seeing and contrast.
> J 900 Pretty bright, very small, somewhat elongated, grey-green in
> color. This object can be found at 100X and going to 285X with
> averted vision makes it grow. From R. Jonckheere PN catalog early in
> this century. (Pretty soon I will have to amend that statement!)