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Re: (IAAC) Obj: M 1 - Inst: 15 inch Obsession f4,5
Hi Armin M1 is a supernova remnant, not a planetary nebula, I just thought I
would let you know for your records. cheers Ron
----- Original Message -----
From: Apache User <apache@galaxy.atmob.org>
To: Internet Amateur Astronomers Catalog <netastrocatalog@visualdeepsky.org>
Sent: Sunday, January 04, 2004 3:39 PM
Subject: (IAAC) Obj: M 1 - Inst: 15 inch Obsession f4,5
> ----
>
> Observation Poster: Armin Hermann <burmeseinn@yahoo.com>
>
> Observer: Armin Hermann
> Your skills: Advanced (many years)
> Date/time of observation: 13 Dec 2003
> Location of site: Sangkhlaburi, Thailand (Lat 15°N, Elev 200m)
> Site classification: Exurban
> Sky darkness: better 6 mag <Limiting magnitude>
> Seeing: 8 <1-10 Seeing Scale (10 best)>
> Moon presence: None - moon not in sky
> Instrument: 15 inch Obsession f4,5
> Magnification: 78x and 342x
> Filter(s):
> Object(s): M 1
> Category: Planetary nebula.
> Class:
> Constellation: Tau
> Data: mag 8,4 size 6'
> Position: RA : DEC :
> Description:
> The spiral form of the brighter parts of M1 did easily show at 78x as well
as a
> fainter narrow shell. At this magnification no other detail visible.
> Considerably more detail at 342x with some dark streaks criss-crossing the
> nebula and at least 4 faint stars embedded in the nebula were (visible
with
> averted vision).
> Very bright even at 342x.
> --
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