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| Object: |
Sharpless 132, Emission Nebula in Cepheus |
| Date, time: |
020406, 02:24-02:43 (UT) |
| Location: |
Sandvretens Observatorium, Uppsala, Sweden |
| Instrument: |
45 cm, f/3.9, prime-focus with coma-corrector (COFFI)/td>
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| Detector: |
Kodak Ektachrome E200 (120-format), 19 min autoguiding |
| Limit. mag.: |
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| Circumstances: |
Clear |
| Comments: |
The negative is scanned in 1000 dpi with AGFA Duoscan two
times to reduce scanner-noise. The scans are then stacked in Picture
Window and contrast enhanced in Photoshop. |
| Observer: |
M.Andersson, A.Emtegren, L.Hermansson, P.Sundfors |
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| Object: |
NGC 2346, A bi-polar, butterfly-like nebula in Monoceros |
| Date, time: |
2002-11-05, 01:40-02:17 (UT) |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m f/4.5 |
| Detector: |
SBIG ST-7E CCD-camera, -35 deg C, 0.9"/pix, 600+600 s |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
Two 10 min exposures added. Each component calibrated with
dark. The picture is treated with Richardson-Lucy
deconvolution, Digital Development Processing and background
flattening. Each frame is self-guided by camera. |
| Observer: |
Lars Hermansson, Grzegorz Duszanowicz |
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| Object: |
IC 1396, Emission Nebula in Cepheus |
| Date, time: |
020406, 00:07-00:27 (UT) |
| Location: |
Sandvreten Observatory |
| Instrument: |
45 cm, f/3.9, prime-focus with coma-corrector |
| Detector: |
Kodak Ektachrome E200 (120-format), 20 min autoguiding |
| Limit. mag.: |
|
| Circumstances: |
Clear |
| Comments: |
The negative is scanned in 1000 dpi with AGFA Duoscan two
times to reduce scanner-noise. The scans are then stacked in Picture
Window and contrast enhanced in Photoshop. |
| Observer: |
M.Andersson, A.Emtegren, L.Hermansson, P.Sundfors |
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| Object: |
M42 Orion Nebula |
| Date, time: |
2001-12-15 21:00 UT |
| Location: |
Hyllinge |
| Instrument: |
8" Meade LX10 |
| Detector: |
Olympus OM1 Fuji Superia 800 ASA, 30 min exposure. |
| Limit. mag.: |
4.0 |
| Circumstances: |
Manually guided 30 min. |
| Comments: |
Positives digitally scanned and contrast enhanced. |
| Observer: |
Mikael Skafar |
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| Object: |
NGC 7635, The Bubble Nebula in Cassiopeia |
| Date, time: |
2001-11-18, 00:16-00:35 (UT) |
| Location: |
Sandvreten Astronomical Observatory |
| Instrument: |
45 cm f/4.5 Newton |
| Detector: |
SBIG ST-7E CCD-camera, coma corrector, -30 deg C, 0.8"/pix, 300+300 s |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
Two 5 min exposures added. Each component calibrated with
bias and dark. The picture is treated with Richardson-Lucy
deconvolution, Digital Development Processing and contrast
enhancement. Digital processing by Mauritz Andersson and
Lars Hermansson. |
| Observer: |
Johan Warell, Lars Hermansson |
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|
| Object: |
NGC 7635, The Bubble Nebula in Cassiopeia |
| Date, time: |
2001-11-18, 00:16-00:35 (UT) |
| Location: |
Sandvreten Astronomical Observatory |
| Instrument: |
45 cm f/4.5 Newton |
| Detector: |
SBIG ST-7E CCD-camera, coma corrector, -30 deg C, 0.8"/pix, 300+300 s |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
Same as above but color component digitally introduced from
picture taken with 6x6 system (COFFI) on Kodak E200. Digital
processing by Mauritz Andersson and Lars Hermansson. |
| Observer: |
Lars Hermansson, Johan Warell |
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| Object: |
Barnard 33, The Horsehead Nebula in Orion |
| Date, time: |
2001-11-18, 02:55-03:25 (UT) |
| Location: |
Sandvreten Astronomical Observatory |
| Instrument: |
45 cm f/4.5 Newton |
| Detector: |
SBIG ST-7E CCD-camera, coma corrector, -30 deg C, 0.8"/pix, 1800 s |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
One 30 min exposure. Dark calibrated, binned 2x2. The picture
is treated with Richardson-Lucy deconvolution, Digital
Development Processing and contrast enhancement. Digital
processing by Mauritz Andersson and Lars Hermansson. |
| Observer: |
Lars Hermansson, Johan Warell |
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| Object: |
M76, The Little Dumbbell. Planetary nebula in Perseus |
| Date, time: |
2001-11-10, 00:35-00:57 (UT) |
| Location: |
Sandvreten Astronomical Observatory |
| Instrument: |
45 cm f/4.5 Newton |
| Detector: |
SBIG ST-7E CCD-camera, -40C, 0.9"/pix, 120+900 s |
| Limit. mag.: |
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| Circumstances: |
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| Comments: |
One 2 and one 15 min exposure added. Each component
calibrated with bias, dark. Result is gradient compensated.
The picture is treated with Richardson-Lucy deconvolution,
mild DDP and contrast enhancement. |
| Observer: |
Johan Warell, Lars Hermansson |
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