Bernd Brinkmann´s

Comet C/2002 F1 (Utsunomiya)

date (yy/mm/dd)

time (UT)

exp. time (min/sec)

camera / telescope

film / CCD

filter

image size

Remarks

C/2002 F1 at 30.03.2002

full moon
dawn, sun 10 deg below horizon

2002/03/30

04:11:40
-
04:12:37

4 x 15 sec

120 mm refractor
@ f/5

Starlight SX

---

17.8' x 17.8'

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

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

C/2002 F1 at 30.03.2002

tail length: 5.4'
full moon
height of comet 10.2 deg above horizon at beginning of exposure

the dark streaks are from star trails in the skyflat that weren't eliminated completely during median combine

2002/03/30

03:27:22
-
03:43:10

14 x 60 sec

120 mm refractor
@ f/5

Starlight SX

---

20.9' x 20.3'

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

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

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