British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member Pages Len Adam
Image search

Passing by! 38P/Stephan-Oterma passing the Eskimo Nebula this morning in Gemini


Expand image

About this observation
Len Adam
Time of observation
09/11/2018 - 05:30
Observing location
Just outside Albox, Almeria , Spain
MyT +Canon 40D with 8-inch Ritchey-Chretien
Single 120 Second exposure
Like This Image

Yesterday I attached my unmodified Canon 40D to my Ritchey-Chretien 8-inch, replacing the SBIG ST-9XE. Last night it was pouring with rain so I was unable to focus the telescope. At 4.30 local time this morning I switched on an outside light - completely dry  as often happens here in Spain - it rains and then dries up almost immediately. I switched off the outside light and the sky was full of stars! I opened up the observatory roof and pointed the telescope at the Pleiades to achieve 'first focus' on this combination. I was then able to check how 38P/Stephan-Oterma was doing and obtained the image shown with the comet sliding past the Eskimo Nebula. (C39). It was quite windy but my superb Spanish run-off roof shed gave excellent wind protection. It was more comfortable than usual in the observatory because yesterday I managed to put in a raised floor by using my jigsaw to cut appropriate holes in the two appropriately sized pieces of wood to accommodate the tripod legs sitting on the courtyard tiled floor below. I am glad I did not put in the usual buried concrete slab   - there is no need. The telescope maintains perfect pointing on its tripod since I did a 120 samples T-Point run. Also having the Ritchey-Chretien is so much better than the SCTs I own which need constant focusing due to temperature changes. This carbon fibre telescope keeps its focus!

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.