David's Astronomy Pages (Sky Tours)
Feb (1) - Gemini

Image collection based on the sky tour "Twin-time for winter skies" featured in the Feb 2012 edition of Astronomy Now.

Bullet  1. M35 - Open Cluster (NGC 2168)
Bullet  2. NGC 2129 - Open Cluster (not yet imaged)
Bullet  3. Propus / Eta Gem - Double Star (not yet imaged) 
Bullet  4. IC 443 - Nebula / Supernovae Remnant
Bullet  5. Abell 21 - Planetary Nebula ("Medusa Nebula" / PK 144-15.1)
Bullet  6. NGC 2392 - Planetary nebula (Eskimo Nebula, Caldwell 39)
Bullet  7. NGC 2371/2372 - Planetary Nebula (Double Bubble Nebula)
Bullet  8. Castor / Alpha Gem - Double Star (not yet imaged)
 

1.   M35 - Open Cluster (NGC 2168)

Mosaic of M35 (right/centre) & NGC 2158 (lower right)  (Gemini)
Image
Mosaic 5x6 CCD frames,  20 sec exposures taken on
2003-01-04  23:33 to 23:54h UT (#37250-321)
Image : 50 x 39 arc mins
8" LX200 classic + ST-7e
[Full Size Image]

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2.   NGC 2129 - Open Cluster

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3.   Propus / Eta Gem - Double Star

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4.   IC 443 - Nebula / Supernovae Remnant

IC 443  (Gemini) 
Image
CCD Image Mosaic (30% size)
60 sec exposure, 3x3 binning, C Filter 
2009-12-11 04:34h UT  (#403423-40)
12" LX200R  (at f/5.7) + ST-10XME
[Larger Image, 50% size]
 
IC 443 - detail 
Image
CCD Image (50% size)
5 x 120 sec exposure (average combine), 3x3 binning, C Filter 
2009-12-11 04:03 h UT  (#403443-47)
12" LX200R  (at f/5.7) + ST-10XME
[larger image 80% size]

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5.   Abell 21 - Planetary Nebula ("Medusa Nebula" / PK 144-15.1)

Abell 21 / PLN 205+14.1  (Gemini)
Image
CCD Image
12 x 2 min exposure (average combine), 2x2 binning, C Filter
2006-11-18 02:22h UT (#153222-33)
8" LX200 Classic + ST-7E
 
Abell 21 / PLN 205+14.1
Image
Approximate Colour CCD Image (CBVR)
Luminance 12 x 2 min ( C filter),  Red 2 min (R filter),
Green 2 min (V filter), Blue 3 min (B filter)
2006-11-18 02:22h UT (#153222-36)
8" LX200 Classic + ST-7E

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6.   NGC 2392 Planetary Nebula (Clown Face or Eskimo Nebula, Caldwell 39

NGC 2392 / Caldwell 39  (Gemini)
Image 
Colour CCD Image
Red 3x20s (av), Green 3x20s (av), Blue 3x30s (av)
2004-02-19  20:25 to 20:31 h UT (#58117-25)
8" LX200 Classic + ST-7E
  
NGC 2392 (Gemini)
Image
CCD Image (square root scaling)
3 x 30 sec (average combine), 2x2 binning (half-frame), C Filter
2009-03-09 22:22 h UT  (#356101-03)
12" LX200R  (at f/5.8) + ST-10XME
  
NGC 2392 - detail
Image
CCD Image (square root scaling, 200% size)
Image details as above
  
NGC 2392 - Spectrograph
Image
CCD Image (200% size enlargement)
3 x 45s sec exposure (average combine), 2x2 binning, S Filter
2009-01-09 21:32 h UT (#342143-45)

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7.    NGC 2371/2372 - Planetary Nebula (Double Bubble Nebula)

NGC 2371  (Gemini)  
[ Herschel H316-2 ]
Distance 4400 light years
Image
CCD Image (35% size) 
4 x 60s (average combine), 2x2 binning, V Filter 
2010-02-20 21:59 h UT  (#414277-81)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 2371  - detail 
Image
CCD Image (cropped, linear scale) 
Image details as above
 
Image
False Colour CCD Image (cropped, log scale)
Image details as above

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8.  Castor / Alpha Gem - Double Star

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