Trifid nebula M20 & open cluster M21 from La Palma


Date2017/07/20
LocationLa Palma / Spain
ObjectTrifid nebula (M20) & open cluster M21
CameraAtik383L+
Guidingyes, QHY5-II Mono via OAG
Telescope8" GSO Newtonian
Barlow lensnone
MountEQ6 Syntrek
Cooling-10°C
Luminance8x 600s, bin: 1x1
Red7x 150s, bin: 2x2
Green7x 150s, bin: 2x2
Blue7x 150s, bin: 2x2
Dark2x
Flat10x
Total exposure~2h12m
Tonight I decided to image the Trifid nebula (M20) which is quite "close" to the Lagoon nebula M8 from my last session. The seeing tonight was around ~2.4" which could have been better - but certainly it was still sufficient.
Back in 2013 I already imaged the Trifid nebula with the same equipment but from Boeblingen. It is interesting to see the difference here.
For post-processing I used the free software DeepSkyStacker and GIMP. The full resolution images is available here.

Clear skies!

Stargazing time on La Palma - Casa Las Flores

It's stargazing time on La Palma again - this time from Casa Las Flores. The little house is located in Aguatavar - close to Tijarafe on a height of about 580m. You have a power supply outside the building, free view to Polaris from both terraces and in July the bright part of the Milky Way is perfectly visible between 22:00 and 4:00 local time. Furthermore you have a coffee maker, a table, chairs, a fast WLAN internet connection and a barbecue. What else do you need? 😀

The image is a single frame recorded with an Canon EOS6D in combination with a Samyang 2.8/14mm lens (15 sec. exposure time, ISO4000) . The post processing has been done with rawtherapee.

Tonight I only test my equipment - for tomorrow I plan to record the bright nebula M8 in the milkyway. So stay tuned for the result!

Astrophotography from La Palma - The Coma Galaxy Cluster - Tacande Observatory


Date2017/04/13
LocationLa Palma / Spain
ObjectComa galaxy cluster
CameraModified Canon EOS6D
Guidingyes
TelescopeR120S / 120mm
Barlow lensnone
MountEQ6 Syntrek
Cooling-
Luminance6x RGB frame / 240s
Red-
Green-
Blue-
Dark5x
Flat-
Total exposure~24m
Tonight I again spent the night at the Tacande Observatory on La Palma. There we observed the Coma galaxy cluster. The result is this photo taken with a modified EOS6D camera.

For post-processing I used the free software DeepSkyStacker and GIMP. The full resolution images is available here.

Clear skies!

Astrophotography from Los Llanos de Aridane - Pinwheel Galaxy M101

Date2017/03/31
LocationLa Palma / Spain
ObjectPinwheel Galaxy M101
CameraAtik383L+
Guidingyes, QHY5-II Mono via OAG
Telescope8" GSO Newtonian
Barlow lensnone
MountEQ6 Syntrek
Cooling-10°C
Luminance10x 600s, bin: 1x1
Red8x 150s, bin: 2x2
Green8x 150s, bin: 2x2
Blue8x 150s, bin: 2x2
Dark2x
Flat10x
Total exposure~2h40m
End of February 2014 I already recorded M101 from Boeblingen near Stuttgart. The total exposure time was about 6 hours (!). This time I did a 2h40m exposure from Los Llanos de Aridane on La Plama with exactly the same equipment. This is the result.

From my perspective the two pictures do not have a big difference despite the colour tone which of course depends on the post processing. However, it's interesting to compare the results with respect to their total exposure time: The image recorded from Boeblingen was exposed more than two times longer.


As a result of the long exposure time the stars are not as perfectly round as the ones with a shorter exposure time. Despite that I am happy to see what is still possible from a city like Boeblingen 🙂

Finally I combined both images to one final image by rotating one image until it matched exactly. Maybe I am wrong but I think in the end this combined image has a little more detail than each of the pictures alone.

A full resolution image is available here.