| Object : | NGC 4236 |
| Coordinates/Direction : | RA: 12h16m, DEC: +69o27' |
| Object size : | 21.9' x 7.2' |
| Object magnitude : | 10.5 |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ NGC_4236 |
| Date : | 2022-03-04 |
| Time (UT) : | 23:10 to 23:05 |
| Mount : | Skywatcher HEQ5, HEQ5 mount project |
| Guide system: | Astroberry, in dithering mode, Guide telescope 200 mm f/3.5, camera QHY5 |
| Lens/telescope : |
Pentax 645 300 mm ED f/4.0, Pentax 645 300 mm project |
| Field : |
6.9 x 4.6 degrees (at full frame) |
| Filter : | none |
| Camera : |
Canon EOS 6D, sensor +2 degree Celsius |
| Control system : |
Raspberry / Astroberry, with GPS |
| Exp. time : | 30x30 seconds at ISO1600 |
| Image process tool : | Siril, Fitswork, Irfanview |
| Processing : | level, cal bias dark flat, dithering |
| Weather : | clear sky |
| Site : | Sweden, Stockholm, Hagsätra roof balcony. Bortle class 9 |
| Comment : |
More test on the roof balcony, much better view from here compare to our balcony.
The hole Western hemisphere is open for me.
Most important I can view objects at high latitude. |
| Date : | 2022-03-04 |
| Comment : |
Now with more photos to stack and later at night I got a more darker sky and the galaxy is easier to see.
During the summer I must take apart the lens to see if there is any thing wrong in there.
Bright stars shouldn't look like this.
Or I have to stop it down to f/5.6. |
| Date : | 2022-01-21 |
| Time (UT) : | 18:56 to 19:14 |
| Mount : | Skywatcher HEQ5, HEQ5 mount project |
| Guide system: | Astroberry, PHD2 in dithering mode, Guide telescope 200 mm f/3.5, camera QHY5 |
| Lens/telescope : |
Pentax 645 300 mm ED f/4.0, Pentax 645 300 mm project |
| Field : |
6.9 x 4.6 degrees (at full frame) |
| Filter : | none |
| Camera : |
Canon EOS 6D, sensor +0 degree Celsius |
| Control system : |
Raspberry / Astroberry, with GPS |
| Exp. time : | 8x30 seconds at ISO1600 |
| Image process tool : | Siril, Fitswork, Irfanview |
| Processing : | level, cal bias dark flat, dithering |
| Weather : | clear sky |
| Site : | Sweden, Stockholm, Hagsätra roof balcony. Bortle class 9 |
| Comment : |
Just a few images to stack to see if there is any trace of the galaxy, and yes you can see it but not more. |
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