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| Object: |
NGC 4565, edge-on Sa-spiral in Canes Venatici |
| Date, time: |
2001-03-23, 21:32-22:30 (UT) |
| Location: |
Sandvreten Astronomical Observatory |
| Instrument: |
45 cm f/4.5 Newton |
| Detector: |
SBIG ST-7E CCD-camera, -40C, 0.9"/pix, galaxy centre 300+ 600 s, outer regions 900 s |
| Limit. mag.: |
+6.5 |
| Circumstances: |
Clear |
| Comments: |
Mosaic of 3 images. Each component calibrated with bias,
dark, flat and also adjusted with regard to gradient and
intensity. The mosaic is treated with Richardson-Lucy
deconvolution and mild DDP and is contrast enhanced. |
| Observer: |
Johan Warell, Lars Hermansson |
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| Object: |
M51, The Maelstrom Galaxy |
| Date, time: |
2001-02-04, 00:55 UT, 01:12 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m, f/4.5 |
| Detector: |
CCD (SBIG ST-7E), 2x10 min, -40 degC, 0.9"/pix. Selfguiding by CCD-camera |
| Limit. mag.: |
|
| Circumstances: |
Cold -20 C, moonshine, haze and some clouds, slight snowfall. |
| Comments: |
Dark subtraction (CCDOPS)
Two images added together (QMIPS)
Richardson-Lucy deconvolution (QMIPS)
Adaptive filtering to reduce noise (IRIS)
Digital Developement Processing (IRIS)
Contrast adjustment and minor colorisation |
| Observer: |
Lars Hermanson, Mauritz Andersson |
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| Object: |
M63, The Sunflower Galaxy |
| Date, time: |
2001-02-04, 02:36 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m, f/4.5 |
| Detector: |
CCD (SBIG ST-7E), 10 min, -40 degC, 0.9"/pix.
Selfguiding by CCD-camera |
| Limit. mag.: |
|
| Circumstances: |
Cold -20 C, moonshine, haze and some clouds, slight snowfall. |
| Comments: |
Dark subtraction (CCDOPS)
Richardson-Lucy deconvolution (QMIPS)
Digital Developement Processing (IRIS)
Contrast adjustment and minor colorisation |
| Observer: |
Lars Hermansson, Mauritz Andersson |
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| Object: |
M31 (The Andromeda Galaxy), M32, NGC205 |
| Date, time: |
000109, 22:41 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newtonian 0.45m (T45) with Coma Corrector f/3.9 (COFFI) |
| Detector: |
Ektachrome E200 (6x6), 10min |
| Limit. mag.: |
|
| Circumstances: |
Clear, moonless |
| Comments: |
Manual guiding
New scan. Contrast enhancement in Photoshop. |
| Observer: |
Lars Hermansson, Johan Warell |
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| Object: |
M31 (The Andromeda Galaxy), M32, NGC205 |
| Date, time: |
000109, 22:41 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newtonian 0.45m (T45) with Coma Corrector f/3.9 (COFFI) |
| Detector: |
Ektachrome E200 (6x6), 10min |
| Limit. mag.: |
|
| Circumstances: |
Clear, moonless |
| Comments: |
Manual guiding |
| Observer: |
Lars Hermansson, Johan Warell |
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| Object: |
M51 (The Whirlpool Galaxy) |
| Date, time: |
2000-04-07, 23:43 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newtonian 0.45m (T45) with Coma Corrector f/3.9 (COFFI) |
| Detector: |
Ektachrome E200 (6x6), 20 min, field 1.9x1.9 deg |
| Limit. mag.: |
|
| Circumstances: |
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| Comments: |
Positives digitally scanned and contrast enhanced |
| Observer: |
Lars Hermansson, Arvid Emtegren, Mauritz Andersson |
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| Object: |
M58, NGC4567,4568 (The Siamese Twins) |
| Date, time: |
2000-04-07, 22:58 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newtonian 0.45m (T45) with Coma Corrector f/3.9 (COFFI) |
| Detector: |
Ektachrome E200 (6x6), 20 min, field 1.9x1.9 deg |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
Positives digitally scanned and contrast enhanced |
| Observer: |
Lars Hermansson, Arvid Emtegren, Mauritz Andersson |
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| Object: |
M66, M65, NGC3628 |
| Date, time: |
2000-03-29, 21:37 UT |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newtonian 0.45m (T45) with Coma Corrector f/3.9 (COFFI) |
| Detector: |
Ektachrome E200 (6x6), 15 min |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
Positives digitally scanned and contrast enhanced |
| Observer: |
Johan Warell, Lars Hermansson, Mauritz Andersson |
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