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| Object: |
M101 |
| Date, time: |
981208, 06:30:00 UT |
| Location: |
La Palma |
| Instrument: |
ALFOSC, Nordic Optical Telescope |
| Detector: |
CCD LORAL 2kx2k at -100.1degC, Johnson R filter, 60s |
| Limit. mag.: |
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| Circumstances: |
Seeing 1".5, astronomical dawn. |
| Comments: |
Bias- and sky background subtracted frame. Hot pixels removed.
3x3 pixels smoothing using an average-smoothing filter.
The intensity scale is logarithmic. |
| Observer: |
Torgny Karlsson, Eva Örndahl |
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| Object: |
M31, The Andromeda galaxy |
| Date, time: |
990905 |
| Location: |
Sandvreten Observatory, Uppsala, Sweden |
| Instrument: |
Comacorrected 45cm f/3.9 |
| Detector: |
Medum format TMax 400, 5 min |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
First light with new medium format camera system. - Not optimised coma correktor. |
| Observer: |
Mauritz Andersson, Lars Hermansson |
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| Object: |
M94 |
| Date, time: |
1999 April 14, 23:20-23:40 |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m f/4.5, x109, x219
Integrated light and Lumicon Deep Sky filter |
| Detector: |
Visual |
| Limit. mag.: |
6.7, transparency excellent |
| Circumstances: |
Clear skies, seeing III |
| Comments: |
Impressive object, very bright, much brighter central disk, the outer envelope elongated E-W. Nucleus very bright, small and diffuse with extension to the N. The central disk showed four very faint dark fuzzy elongated spots (presumalbly between spiral arms, which were not seen bright). Faint lighter arcs in the surrounding envelope, the S and W ones easiest, the N and E difficult. The bright disk had a brighter condensation to the NW. The disk was mottled by consistent detail, very difficult to detect. Faint star interior to light condensation in the W envelope. |
| Observer: |
Johan Warell |
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| Object: |
M100 |
| Date, time: |
1999 April 15, 00:00-00:15 |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m f/4.5, x219, Integrated light |
| Detector: |
Visual |
| Limit. mag.: |
6.5, transparency excellent |
| Circumstances: |
Clear skies, seeing III |
| Comments: |
Well condensed non-stellar nucleus. Condensations in spiral arm W of nucleus. Low contrast and surface brightness. |
| Observer: |
Mauritz Andersson |
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| Object: |
Milky Way Centre |
| Date, time: |
19970804, UT 20.39 |
| Location: |
Los Retamares (2100 msl), Tenerife, Spain |
| Instrument: |
Zuiko 35 mm, f/4 |
| Detector: |
Film - Fuji Super-G 800, exposure 5 min |
| Limit. mag.: |
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| Circumstances: |
Haze, manually turned tracker |
| Comments: |
Picture is treated by unsharp masking to enhance visibility of dust lanes. |
| Observer: |
Lars Hermansson |
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| Object: |
M31, The Andromeda galaxy |
| Date, time: |
970109, 23:57 CET |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m f/4.5 |
| Detector: |
Film - Kodak Ektacolor Gold 1000 Pro, exposure 5 min |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
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| Observer: |
Lars Hermansson |
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| Object: |
M33 |
| Date, time: |
970104, 21:49 CET |
| Location: |
Sandvreten observatory |
| Instrument: |
Newton 0.45m f/4.5 |
| Detector: |
Kodak Ektacolor Gold 1000 Pro, exposure 5 min |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
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| Observer: |
Lars Hermansson |
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Patrik Holmström tillsammans med nedanstående ifyllda mall. Namnet på bilden bildar du enligt: