David's Astronomy Pages
Images - Session 643 (2018-12-23)

Objects Session Notes
Bullet 46P/Wirtanen - Comet
   
Bullet Photometric Monitoring - Variables
   - AM Her, DY Per

- AM CVn , SS Her, CY Lyr attempts failed
   
Bullet Astrometric Monitoring - Nearby Stars
 - None
 
    
   
- Evening Session (3.7 hours duration) .

Poor sky transparency
- Main aim of the session was acquire images of a selection of nearby stars, variable stars and deep sky objects , and perform software testing.'
   
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature:  -2.5°C (minimum) 
- CCD Temperature:  -25°C (70% av. power)
- Notes from 2018-12-23 >>
    

46P/Wirtanen - Comet

46P/Wirtanen (passing through Auriga)
Sun Distance 1.07 AU
Earth Distance 0.09 AU (13.6 million km)
poor conditions (bright sky gradients)
   
Image    
CCD Image (50% size, linear scale)
3 x 15s exposure (average combine), 3x3 binning, C Filter
2018-12-24 07:28 UT (#643070-72)
12" LX200R (at f/10.4) + ST-10XME
   
      
46P/Wirtanen - Earlier Image (2019-12-16)
(passing through Taurus)
Near to point of closest distance from earth
Sun Distance 1.06 AU
Earth Distance 0.08 AU (11.6 million km)
  46P/Wirtanen - Earlier Image (2019-12-16)
Image   Image
CCD Image (50% size, linear scale)
15s exposure (single frame), 3x3 binning, C Filter 
2018-12-16 21:03 UT (#641184)
12" LX200R  (at f/10.4) + ST-10XME
(Autoguided on comet using TS 80mm APO + ZWO ASI178MC)
  CCD Image (50% size, log scale)
31 x 15s exposure (average combine), 3x3 binning, C Filter 
2018-12-16 21:03 to 21:16 UT (#641184-222)
12" LX200R  (at f/10.4) + ST-10XME
(Autoguided on comet using TS 80mm APO + ZWO ASI178MC)
      
    Image
    False Color CCD Image (50% size, logscale)
Inverse Spectrum
Image details as above

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