Allgemein

Getting the Optical Axis of the Scope to point through the opened Shutter -

The ultimate challenge on a ultra-faint planetary nebula

Revisiting one of my favourite targets with an SCT and combining old and new Newton data

While analysing some testshots of the peculiar Arp 276 galaxies the readout data in Pixinsight seemed to appear strange ...

Interstellar First Light with a Celestron C9.25 Schmidt-Cassegrain Telescope

Halton Arp and his peculiar Galaxies The interacting galaxy system Arp 273 is not only a visually striking example of gravitational interaction, but also a direct entry point into the work of…

Learning to deal with the Advanced Sequencer Tool in N.I.N.A.(Nighttime Imaging 'N' Astronomy)

Shutter Drive Failure again, Image Train Tilt Measurement, Collimation and the Guiding Drama

The concept of Signal & Noise and the Tadpoles Nebula (IC410)