Astrophotography

Andromeda-Galaxy M31 with 80x 1 minute exposures using a telezoom lens on an equatorial mount.

Orion nebula and running man 79x 20s exposures using 80/600 telescope, unguided.

Horsehead nebula and flaming star nebula 43x180s guided.

18 Nov 2020

80 Lights with 1 Minute exposure

205 mm Telezoom objective f/5.6

Canon EOS 700D unmodified piggybacked on my

equatorial-mounted 80/600 telescope.

Processed with Siril and Affinity Photo

I always have a hard time to meet the correct focus,

so decided to take images through my telescope next time.

10 Jan 2021

79 Lights (from 180 taken) with 20s exposure

80/600 Telescope, unguided

Canon EOS 700D unmodified

Processed with Siril and Affinity Photo

Much easier to find the focus, however without auto guiding the exposure limitation is not satisfying.

Also the running man and a lot of details are not reddish. Would be nice to have a astromodified camera.

05 Mar 2021

43 Lights with 180s exposure

80/600 Telescope with Autoguiding

Canon EOS 700D astro-modified

using Astronomik CLS filter.

Processed with Siril and Affinity Photo.

Autoguiding works fine. But long exposures are not possible without the use of light pollution filters. Unfortunatly, I only have the Astronomik CLS which is not indented for being used with an astromodified camera (without IR blocking filter). The star colors are not perfect and the entire image could have a longer exposure time.

18 Jun 2021

15 Lights with 300s exposure

Canon EOS 700Da with 300mm Lens

using Optolong L-Extreme filter.

Processed and stacked with Affinity Photo.

This is the first time I used KStars/Ekos. The guiding still does not work perfectly, because Ekos is more sensitive to mount backlashes. During last month I already reduced the backlash of my mount, perhaps still not good enough?!

The is a small banding visible, but not horizontal or vertical so it does not have to do with the typical banding of a DSLR camera. Perhaps this is due to Sahara dust in the upper atmosphere or due to small clouds. But there were no clouds visible during my imaging session.

It is still very difficult to find the focus of a camera lens, at least it is much easier to meet the focus when using a telescope, however this object requires a much smaller focus length to fit into the field of view of the camera.