Tag: ZWO ASI 1600MC

M55 Globular cluster

Messier55 is a globular cluster located in constellation Sagittarius. This cluster is very difficult to photograph from central Europe, because there is located not far from horizon. For example Charles Messier hat troubles to locate this cluster and it took him 14 years to spot it. I made a trip to Gavdos – the southernmost place is Europe. There the cluster was significantly upper in the sky.

M55 is 17600 light-year far from the Solar system, it has approximately 100 light-year diameter and contain 100 000 stars.

Techanical details

Telescope:RC 154/1370
Aperture:154 mm
Focal length:917 mm
MountiOptron CEM25P
AutoguidingQHYCCD miniGuideScope 130 mm f/4.3, ZWO 174 MM
Camera:ZWO 1600 MC @ -15C
Corrector:Astro Physics CCDT67
Filters:UV, IR cut
Exposure:37x 120s Gain 240
Date:2017-09-29

Chasing the darkness in Greece on small island Gavdos

I was always dreaming about dark skies, because I live in sub-urban area with relatively strong light pollution. Two friends returned from Gavdos where they spent their summer vacation and told me that they have never seen so many stars in the sky – at that moment I was tempted. One year later I decided to combine our summer vacation (mid Semptember) with chasing of the dark skies. Swimming, snorkeling, hiking during the day and photographing, observing during the night.

We have been to Greece already, so we knew what to expect – beautiful beaches, people with great hospitality and tourists everywhere. But Gavdos is something different. It is a small island south from Crete. The island is the southernmost point of the entire European continent, which is optimal for astrophotography, because the deep space objects, which are near to the horizon in Switzerland, are 12° upper in the sky. Only few people live on Gavdos, which means there is no light pollution compared to other Greek islands. There are neither big hotels, discotheques nor organized beaches. On the other hand there are places where you can sleep and there are many taverns where you can get something delicious. Moreover in all taverns is a Wi-Fi. Electricity is mostly produced by the solar panels and stored in the batteries and some taverns use generators, so there is electricity available whole night. This means you don’t have to carry heavy batteries to power the mount or camera cooling with you.