thatīs me in thermal infrared

Bernd Brinkmann´s

images of

Comet C/1997 J2 (Meunier-Dupouy)

date (yy/mm/dd)

time
(UT)

exp. time (min/sec)

camera / telescope

film / CCD

filter
(IF =
interference filter)

Remarks
C/1997 J2 am 21.11.98
98/11/21
18:03:14
-
18:15:44
4 x 180 sec
120 mm refractor
f / 5
Starlight SX
IR-Block +
IF green

processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
rescaling
write FITS

processing with Photoshop:
read as 16 bit FITS
log scaling
convert to 8 bit TIF
clipping
C/1997J2 am 17.08.1998
98/08/17
01:19:00
180 sec
Askania Schmidtkamera
(340/500/1375 mm)
(Newton-Focus)
SBIG ST-6
---

processing with
CCDOPS:
dark

processing with
MIRA A/P:
flat
rescale
write FITS

processing with Photoshop:
open as 16 bit FITS
log scaling
save as 8 bit-TIF
clipping
save as JPEG

C/1997T1 97/12/30 18:24-18:36 UT

97/12/30

18:24:36
-
18:36:25

4 x 180 sec

120 mm refractor
f / 5

Starlight SX

---


processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping

C/1997 J2 97/11/18 17:11 - 17:31 UT

97/11/18

17:11:35
-
17:31:35

4 x 60 sec
+
4 x 180 sec

C 8 + telecompressor
f / 5.6

Starlight SX

---

processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping

bad seeing

C/1997 J2 97/11/09 19:25-19:41 UT

97/11/09

19:25:50
-
19:41:44

4 x 60 sec

C 8 + telecompressor
f / 5.6

Starlight SX

---

processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/10/19 18:43 UT 97/10/19 18:43:28 180 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/10/19 18:24 - 18:40 UT 97/10/19 18:24:10
-
18:40:07		 5 x 180 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/27 21:11 - 22:24 UT
interference pattern due to different computer		 97/09/27 21:05:40
-
21:11:55		 2 x 180 sec 120 mm refractor
f / 5		 Starlight SX IF green
+
IF IR block		 processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/25 20:13 - 20:18 UT 97/09/25 20:13:30
-
20:18:55		 4 x 60 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/24 20:59 - 21:12 UT 97/09/24 20:59:05
-
21:12:30		 2 x 300 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/24 20:38 - 20:53 UT 97/09/24 20:38:30
-
20:53:40		 5 x 60 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/21 19:48 - 20:06 97/09/21 19:48:20
-
20:06:10		 4 x 60 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/14 19:26-20:07 UT 97/09/14 19:26:44
-
20:07:33		 4 x 60 sec
+
2 x 300 sec
+
2 x 180 sec		 C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/09/10 21.02-21:38 UT 97/09/10 21:02:30
-
21:38:07		 5 x 60 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/08/18 20:41 - 20:49 UT 97/08/18 20:41:00
-
20:49:15		 3 x 180 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/08/11 20:46 - 21:56 97/08/11 20:46:20
-
21:56:10		 9 x 60 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (median)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/08/10 21:24 - 21:36 UT 97/08/10 21:24:02
-
21:36:00		 3 x 60 sec
+
3 x 180 sec		 C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (median)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping

C/1997 J2 97/08/09 21:50 - 21:56 UT

 97/08/09 21:50:33
-
21:56:22		 4 x 60 sec C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping
C/1997 J2 97/08/07 97/08/07 21:37:32
-
22:20:23		 2 x 60 sec
+
2 x 180 sec		 C 8 + telecompressor
f / 5.6		 Starlight SX --- processing with MIRA A/P:
bias
dark
flat
register
combine (sum)
background
write TIFF

processing with Photoshop:
pixel rectification
log scaling
clipping

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any comments to: Bernd.Brinkmann@FH-BOCHUM.DE
last update: 21.12.1998