David's Astronomy Pages
CCD Images - Session 554 (2013-11-06)

Objects Session Notes
Bullet NGC 6934 - Globular Cluster (Caldwell 47)
Bullet Nova Delphini 2013 - nova
 
Bullet Photometric Monitoring - Variables
SS Cyg, AM Her, CY Lyr, FG Sge, WZ Sge
(attempts at BL Lac, U Sge failed due to cloud)
 
Bullet Astrometric Monitoring - Nearby Stars
- None
- Evening session (1.2 hrs duration).  Poor conditions
- Session operated under semi-automated control, with remote monitoring from indoors computer.  
- Ambient Temperature:  0 degC minimum
- CCD operation -25 degC (at 71% average cooling).  
-
-

NGC 6934 - Globular Cluster (Caldwell 47)

NGC 6934 / Caldwell 47  (Delphinus)
Image
CCD Image (50% size)
3 x 20s exposure (average combine), 3x3 binning, C Filter 
2013-11-06 21:34 hUT (#554044-46)
12" LX200R  (at f/9.7) + ST-10XME
 
NGC 6934 - Earlier Image (2012-10-21)
Image
CCD Image (50% size)
6 x 20s exposure (average combine), 3x3 binning, C Filter 
2012-10-21 20:26 hUT (#517065-74)
12" LX200R  (at f/9.7) + ST-10XME

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 Nova Delphini 2013 - nova

Nova Delphini 2013 (Delphinus)
Nova Delphini was discovered on 14th August 2013 by Japanese observer Koichi Itagaki at magnitude +6.8. 
Koichi had imaged the same field the day before and nothing was visible at the same location.
The progenitor star was identified from archive images as being magnitude +16.9

The image below was taken 85 days after discovery when nova had faded to around +10.6
The Nova is the central object in the image, marked by white cross-hairs.
(poor  sky transparency)

Image
CCD Image (cropped)
5 sec exposure (single frame), 3x3 binning, C Filter
2013-11-06 21:37hUT (#554052)
12" LX200R  (at f/9.7) + ST-10XME
 
Earlier Image of Nova Delphini (2013)  - 2013-11-01
taken 80 days after discovery when nova had faded to around +10.6
Image
CCD Image (cropped)
4 x 5 sec exposure (average combine), 3x3 binning, C Filter
2013-11-01 19:03hUT (#552148-52)
12" LX200R  (at f/9.7) + ST-10XME
 
Earlier Image of Nova Delphini (2013)  - 2013-10-27
taken 75 days after discovery when nova had faded to around +10.5 
Image
CCD Image (cropped)
5 sec exposure (single frame), 3x3 binning, C Filter
2013-10-27 22:18hUT (#551028)
12" LX200R  (at f/9.7) + ST-10XME
 
Earlier Image of Nova Delphini (2013)  - 2013-10-11
taken 59 days after discovery when nova had faded to around +9.5
Image
CCD Image (cropped)
5 x 5 sec exposure (average combine), 3x3 binning, C Filter
2013-10-11 19:08hUT (#547165-69)
12" LX200R  (at f/9.7) + ST-10XME
 
Earlier Image of Nova Delphini (2013)  - 2013-09-08
taken 25 days after discovery when nova was at magnitude +7.5
Image
CCD Image (cropped)
5 x 5 sec exposure (average combine), 3x3 binning, C Filter
2013-09-08 22:19hUT (#546057-61)
12" LX200R  (at f/9.7) + ST-10XME

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Variable Stars

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