Bernd Brinkmann´s

Comet 78 P/Gehrels 2

date (yy/mm/dd)

time (UT)

exp. time (min/sec)

camera / telescope

film / CCD

filter
IF = interference filter

image size

Remarks

2005/02/04

23:02:10
-
23:14:22

5 x 180 sec

C8 @ f/5.8

Starlight SX

---

8.0' x 8.0'

processing with MIRA A/P:
dark
flat
save as FITS

processing with Astrometrica:
stack on comet (sum)

processing with Photoshop:
pixel rectification
log scaling
clipping
save as JPEG

78 P/Gehrels 2 97/09/27 03:08 - 03:12 UT

1997/09/27

03:08:20
-
03:12:52

2 x 180 sec

120 mm refractor
f / 5

Starlight SX

IF green
+
IF IR block

15.9' x 15.3'

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

processing with Photoshop:
pixel rectification
log scaling
clipping

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