The Webb Deep-Sky Society

NGC 3372 - Eta Carina Nebula and Keyhole.  Drawings by Carl Knight

 

Carl's Observation Notes:

"Last night was a hard frost here (New Zealand) and clear skies. Naked eye LMag was around 6.5 based on stars I could see in the coal sack.
I could see the Homunculus around Eta Car itself, but it's structure is too fine to draw. I changed to high power for a better look at it just before 
coming inside - you could see the filamentary structure even - so I'm going to concentrate just on this when another occasion presents. 
I was a little disappointed with the sketch at first. I was not sure that I had captured the stunning beauty - the star field is fantastic - however my 
opinion of the sketch increased somewhat when I inverted the colours. It is very close to what I saw through the eyepiece. The original drawing is large 
format, full A4 width give or take.
So for now the attached image details are as follows":

Object:		NGC 3372 - Eta Carina Nebula and Keyhole.
Telescope: 	12" F10 SCT.
Eyepiece:	22mm Televue Panoptic.
Magnification:	139x
FOV.		29.5'
Filter:		None.
UTC:		21/05/2009 11:45 UTC (23:45 NZST)
NE LMag:	>6.5

Click on the individual sketches for more detail.

NGC 3372 - Eta Carina Nebula and Keyhole - Sketch Courtesy of Carl Knight

 NGC 3372 - Eta Carina Nebula and Keyhole - Sketch Courtesy of Carl Knight

 

Carl started a project, that he had been planning for some time, and that is to survey and draw deep-sky objects in the constellation of Orion.  Below are some of those sketches. Click on individual sketches for more detail.
M42 Sketch Courtesy of Carl Knight M42 Sketch Courtesy of Carl Knight NGC1973- 1977 Sketch Courtesy of Carl Knight NGC1980 Sketch Courtesy of Carl Knight Sigma Ori Sketch Courtesy of Carl Knight
M42 Sketch Courtesy of Carl Knight M42 Sketch Courtesy of Carl Knight NGC1973- 1977 Sketch Courtesy of Carl Knight NGC1980 Sketch Courtesy of Carl Knight Sigma Ori Sketch Courtesy of Carl Knight

Observation Details:

M42, Trapezium region

07/12/2008 01:00 UT

12" F10 SCT

24mm eyepiece

Mag 127x

Field size 34 arcmin FOV.

Seeing Ant II

LMag. 5.0

Filter. UHC-S used for the nebula. Stars drawn without.

Moon low and far west at observation commence, set by observation complete.

 

Observation Details:

M42 emission region

20/12/2008 23:35UT

12" F10 SCT

8mm eyepiece

Mag 381x

Field size: 10.7'

Seeing Ant. III

LMag. 4.5

Filter: None.

 

Observation Details:

NGC 1973/77 reflection nebulae

27/12/2008 00:06UT

12" F10 SCT.

38mm eyepiece.

Mag. 80x

Field size: 56'

Seeing Ant. III

LMag. 4.5

Filter: This takes a bit of explanation. A UHC-S is a high pass filter for essentially reddish, blue-greenish, and greenish light. So I took a gamble that as reflection nebulae scatter blue light most effectively, that I might get some contrast improvement using the UHC-S. For my eyes, the UHC-S did improve contrast. Equally this could be due to suppression of other stray (sodium glow et. al.) light.

 
Observation Details:
NGC 1980
02/01/2009 23:14UT
12” F10 SCT
22mm eyepiece
Mag 139x
Field Size:	29.5 arcmin
Seeing Ant. III
Mag: 5.0
Filter: None.

 

 
Observation Details:
Sigma Ori
02/01/2009 23:40UT
12” F10 SCT
8mm eyepiece
Mag 381x
Field Size:	10.7 arcmin
Seeing  Ant. III
LMag: 5.0
Filter: None.

 
M78 Sketch Courtesy of Carl Knight NGC2022 Sketch Courtesy of Carl Knight NGC1662 Sketch Courtesy of Carl Knight    
M78 Sketch Courtesy of Carl Knight NGC2022 Sketch Courtesy of Carl Knight NGC1662 Sketch Courtesy of Carl Knight    

Observation Details:

M78

18/01/2009 20:59UT

12" F10 SCT

13mm eyepiece

Mag 234x

Seeing Ant III

LMag 4.5

Observation Details:

NGC2022

18/01/2009 21:47UT

12" F10 SCT

22mm eyepiece

Mag 139x

Seeing Ant III

LMag 4.5

Observation Details:

NGC 1662
18/01/2009 22:16 UT
12" F10 SCT
22mm eyepiece
Mag 139x
Seeing Ant III
LMag 4.5
    

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