Comet Tuttle–Giacobini–Kresák (41P)

2017/03/01

While waiting for virgo cluster to rise, I took some images of comet 41P and 45P.
There was no visible tail yet, but looked like the coma is large and diffused.

Exposure: 12 x 300″
Location: Panoche Hills BLM, CA
Condition: Excellent transparency, excellent seeing
Equipment: SIG8300M + Baader LGRB filter, comet tracking with OAG8300 + STi, AT111EDT on AP1100.

2017/03/13

I took images of comet 41P and 45P at my white zone backyard, to test my imaging system. Comparing to the last image, there was a very small tail visible, however the coma looked smaller probably due to light pollution and moon light. The smudge on the top right corner is spiral galaxy NGC3198.

Exposure: 12 x 300″
Location: Sunnyvale CA
Condition: Average transparency, average seeing
Equipment: SIG8300M + Baader LGRB filter, comet tracking with OAG8300 + STi, AT111EDT on AP1100.

2017/04/01

The transparency was good, except that there were some high clouds passing by from time to time. Overall sky condition was not so great when I took the image of 41P, during which time there were lots of passing clouds. The condition became better after midnight.

Exposure: 12 x 300″
Location: Panoche Hills BLM, CA
Condition: very good transparency with passing high clouds, very good seeing
Equipment: SIG8300M + Baader LGRB filter, comet tracking with OAG8300 + STi, AT111EDT on AP1100.

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