Thursday, 21 August 2014

NGC 7293




NGC 7293 / Helix Nebula
Constellation - Aquarius
Planetary nebula
Distance 900ly
Mag 7.6

Date 20/8/14
Transparency - average
SQM 21.28

Telescope - 16" f/4.5
EP - 17mm Nagler x111

Sketch notes
Very large and diffuse in the centre, top and bottom.
The Lumicon OIII really improved the contrast on the PN compared to the smaller ones.
A couple very faint stars inside but transparency made it very tricky seeing them.

NGC 7009




NGC 7009 / Saturn Nebula
Constellation - Aquarius
Planetary Nebula
Distance 3300ly
Mag 7.8

Date 20/8/14
Transparency - Poor
SQM 21.24

Telescope - 16" f/4.5
EP - 12mm Nagler x158
Filter - DGM Optics NPB

Sketch notes
Poor transparency made seeing its shape very hard, I've seen it in better conditions in my 12".
I had to use a lot lower magnification to what I would have liked but caught a few glimpses which gave away its shape.

NGC 6781




NGC 6781
Constellation - Aquilla
Planetary nebula
Distance 5000ly
Mag 11.6

Date 20/8/14
Transparency - average
SQM 21.3

Telescope - 16" f/4.5
EP - Leica ASPH + Baader VIP barlow x223
Filter - DGM Optics NPB

Sketch notes
Average size but clearly showed a 'shell' across its northern edge.

NGC 6572




NGC 6572
Constellation - Ophiuchus
Planetary nebula
Distance 2400ly
Mag 8

Date 21/8/14
Transparency - poor
SQM 21.18

Telescope - 16" f/4.5
EP - Leica ASPH + Baader VIP barlow x312
Filter - DGM Optics NPB

Sketch notes
Small, compact and very bright but showed no detail.
Green colour with or without filter.

M13




This was a revisit to M13 which I originally sketched with my old 8" but the accuracy of that sketch wasn't great so I've been looking forward to trying it again with my current scope.

Dark skies and average transparency made M13 light up and was resolved even with a low power EP but as I used the Leica ASPH + Baader VIP barlow to really up the magnification and get that huge ball of stars look in the EP.
At x310 I think I have lost some of the shape of M13's 'arms' which usually stretch out showing its shape but this is the kind of magnification I like to view globs, in the past my globular sketches have all been around x220 but since was the 'king' I thought it deserved special treatment. :)

Sunday, 3 August 2014

NGC 6633




NGC 6633
Constellation - Ophiucus
Open cluster
Distance 1200Ly
Mag 4.59

Date 3/8/14
Transparency -  Very good
SQM 21.33

Telescope - 16" f/4.5
EP - 26mm Nagler x84

Sketch notes
Very large, bright and stretching across nearly all the 1˚ FoV, fairly lose but stands out well against the background stars.

Thursday, 31 July 2014

NGC 6520




NGC 6520
Open cluster
Constellation - Sagittarius
Distance 6.2Kly
Mag 7.59

Date 28/7/14
Transparency - Good
SQM 21.33

Telescope 16" f/4.5
EP - 17mm Nagler x129

Sketch notes
Fairly small and compact cluster, built up of mainly faint stars around the same magnitude as the background of Milky way stars.