| Object : | M 34 |
| Coordinates/Direction : | RA: 02h42m, DEC: +42o46' |
| Object size : | 35' |
| Object magnitude : | 5.5 |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 34 |
| Date : | 2023-09-24 + 2023-10-05 |
| Time (UT) : | - |
| Mount : | SkyWatcher HEQ5 controlled by Astroberry |
| Guide : | Ekos internal guider in dithering mode, QHY5 camera with 200 mm f/3.5 lens |
| Lens/telescope : | Pentax 645 300 mm ED f/4 (medium format lens) |
| Corrector/Barlow : | - |
| Field (FOV) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by Astroberry software |
| Film/CCD : | Raw |
| Exp. time : | 114x60 seconds, iso1600 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | crop, cal bias, flat, photometric color calibration |
| Weather : | Clear sky |
| Site : | Sweden, Stockholm, Hagsätra, Bortle class 9 |
| Comment : |
Added more images from an earlier photo session, increased the exposure from 1 hour to two hours. |
| Date : | 2023-09-24 + 2923-10-05 |
| Exp. time : | 114x60 seconds, iso1600 |
| Comment : |
Added more images from an earlier photo session, increased the exposure from 1 hour to two hours.
The left has less noise, but only twice the exposure time doesn't help much.
If possible better to aim for 4 hours exposure with this system f/4 and a DSLR camera.
But if will always be that you want lower noise and need even longer exposure.
Darker place, filters, lower noise camera will of course help a lot. |
| Date : | 2023-10-05 |
| Time (UT) : | 19:42 to 20:57 |
| Mount : | SkyWatcher HEQ5 controlled by Astroberry |
| Guide : | Ekos internal guider in dithering mode, QHY5 camera with 200 mm f/3.5 lens |
| Lens/telescope : | Pentax 645 300 mm ED f/4 (medium format lens) |
| Corrector/Barlow : | - |
| Field (FOV) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by Astroberry software |
| Film/CCD : | Raw |
| Exp. time : | 60x60 seconds, iso1600 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | crop, cal bias, flat, photometric color calibration |
| Weather : | Clear sky |
| Site : | Sweden, Stockholm, Hagsätra, Bortle class 9 |
| Comment : |
Open star cluster are easy to take photos of even from high light polluted areas.
This is a classic object, discovered already 1654 by Giovanni Batista Hodierna.
The angle size is 0.5 degree, about as the Moon.
The true diameter is 7 ly and his has about 400 members (stars).
It's not very far away, 1500 ly.
Open the full resolution image and discover a lot of other objects lurking there in the dark.
Here is a plate solved version by astrometry.net:
M34 plate solved.
Opens in a new window. |
English
(click on the image to get a full resolution photo in a new window)
(click on the image to get a full resolution photo in a new window)