Medusa nebula (Abell 21)

The Medusa nebula, also known as Abell 21, is a planetary nebula in the constellation Gemini. 

It was discovered by astronomer George O. Abell in 1955 on the photographic plates of the Palomar Observatory Sky Survey (POSS), and he listed it as number 21 in his catalogue of Planetary Nebulae... Read more

Comet C/2022 E3 ZTF

C/2022 E3 ZTF is a long period comet that was discovered by astronomers Bryce Bolin and Frank Masci on 2 March 2022 using the Zwicky Transient Facility (ZTF) survey..... Read more.

Van den Bergh 152

Widefield image of a Cepheus region with special interest in Van den Bergh 152 (vdB 152, also known as Cederblad 201), the blue reflection nebula on the right-center and DeHt5 (PN G111.0+11.6) the planetary nebula on the bottom (a bit on the left), but including many other interesting objects: LBN538, B175, LBN528….. Read more.

Test of BlurXTerminator

I have tested BlurXTerminator with my image of NGC 2359.

I have chosen this one because last year I was very disappointed with the result I got when I processed it. In addition to the problem already mentioned about its very small rise above the horizon, the seeing ... Read more.

HFG1 & Abell 6

This field of view includes two extremely faint planetary nebulae in the constellation Cassiopeia.

In the upper part of the image, we find Heckathorn-Fesen-Gull 1 (HFG1... Read more

M1 the Crab Nebula

It was only very recently that I realized what ... I had never imaged M1 before, being the most famous, studied and imaged supernova remnant!... Read more

M31 Andromeda Galaxy (2022)

When I first presented this image, back in 2010!, I wrote the following :

 "...all this work has allowed me to learn really a lot both from the mistakes I made and from the experimentation with new processing techniques..." Read more (updated 24/09/22)