 |
| Object: |
The Globular Cluster M3 |
| Date, time: |
20100413 |
| Location: |
Börje, outside Uppsala |
| Instrument: |
Celestron C8-SGT, 8", F/10 Schmidt-Cassegrain with a Hirsch F/6.3 reducer. |
| Detector: |
Canon 5D Mark II, ISO400, 2 minutes exposure
|
| Limit. mag.: |
|
| Circumstances: |
Clear. |
| Comments: |
|
| Observer: |
Arne Högmark |
|
 |
| Object: |
The Double cluster (NGC 884 and NGC 869) |
| Date, time: |
20080419 |
| Location: |
Hågadalen, Uppsala |
| Instrument: |
Celestron C8-NGT, 20 cm Newton with 1 m focal length |
| Detector: |
Canon 400D, ISO800, 14x30s exposure
|
| Limit. mag.: |
|
| Circumstances: |
Clear. Object right above Uppsala, heavy light pollution |
| Comments: |
|
| Observer: |
Patrik Holmström |
|
 |
| Object: |
NGC 188 |
| Date, time: |
2008-03-04, 23:13-00:02 (UT) |
| Location: |
Sandvretens observatorium 30 km W Uppsala, Sweden |
| Instrument: |
Newton 0.444 m, f/4.4 |
| Detector: |
SBIG ST-7E (-35C), CFW-8, Schuler CBVR
Exposure: Clear 5min (bin1); B 2x5min (bin1); V 5min (bin1); R 5min (bin1)
|
| Limit. mag.: |
|
| Circumstances: |
Clear, rural sky, seeing 2.5" |
| Comments: |
Calibration and CBVR composition in MaximDL and final retouch in Photoshop. |
| Observer: |
Lars Hermansson |
|
|
| Object: |
M15 |
| Date, time: |
2000-09-02, 00:12, 00:20 (UT) |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m f/4.5 |
| Detector: |
Ccd Sbig ST-7E, -20 deg C, 0.8"/pix, Paracorr |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
Composite of 2 exposures (60s and 300s), logarithmically
scaled (CCDOPS). Contrast enhancement and unsharp mask
(Photoshop). |
| Observer: |
Lars Hermansson, Mauritz Andersson |
|
|
| Object: |
M13 (The Great Globular Cluster in Hercules) |
| Date, time: |
2000-03-24, 22:37 (UT) |
| Location: |
Sandvreten Observatory |
| Instrument: |
T45 (Newton 0,45m, f/4,5) |
| Detector: |
CCD (Sbig ST-7E) cooled to -30 degC, 0,9"/pixel, 300s exp. time. |
| Limit. mag.: |
ZLM 6,5 |
| Circumstances: |
Clear, rural sky |
| Comments: |
Dark subtraction (CCDOPS)
New image processing by Mauritz Andersson 000507:
Subtraction of background by polynomial fitting and sub-
traction. Deconvolution 5 iterations with positivity con-
straint. Suppression of noise by wavelet filtering, finest
scale mult by 0.5.
Digital Developement Processing by dividing the above
result by the the same image but gaussian blurred 0.8 pix
and with an added constant of 2000. Finally the max and min
cuts where adjusted.
|
| Observer: |
Lars Hermansson, Johan Warell |
|
|
| Object: |
M13 (The Great Globular Cluster in Hercules) |
| Date, time: |
2000-03-24, 22:37 (UT) |
| Location: |
Sandvreten Observatory |
| Instrument: |
T45 (Newton 0,45m, f/4,5) |
| Detector: |
CCD (Sbig ST-7E) cooled to -30 degC, 0,9"/pixel, 300s exp. time. |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
Dark subtraction (CCDOPS) and contrast enhancement (Photoshop) |
| Observer: |
L. Hermansson, J. Warell |
|
|
| Object: |
h and Chi Persei, The Double cluster |
| Date, time: |
990904 |
| Location: |
Sandvreten Observatory, Uppsala, Sweden |
| Instrument: |
Comacorrected 45cm f/3.9 |
| Detector: |
Medium format TMax 400, 5 min |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
First light with new medium format camera system
Addendum - Not optimised comacorrektor |
| Observer: |
Lars Hermansson, Johan Warell |
|
|
| Object: |
NGC 2264, The Christmas Tree cluster |
| Date, time: |
970227, 22:40 CET |
| Location: |
Sandvreten Observatory |
| Instrument: |
Comet Catcher 0.14m f/3.6 |
| Detector: |
Kodak Ektacolor Gold 1000 Pro, exposure 25 min |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
Deep Sky filter |
| Observer: |
Johan Warell |
|
 |
| Object: |
M45, The Pleiades |
| Date, time: |
970104, UT 2115-2125 |
| Location: |
Sandvreten Observatory |
| Instrument: |
Newton 0.45m f/4.5 |
| Detector: |
Kodak Ektacolor Gold 1000 Pro, exposure 10 min |
| Limit. mag.: |
|
| Circumstances: |
|
| Comments: |
|
| Observer: |
Lars Hermansson |
|
