M51 on April 27th 2017. A few frames with egg-shaped stars have been removed. 17x600s on ISO800 Nikon D750 / C11 / Starizona SCT Corrector LF / IDAS D1 / MGEN II on OAG / NEQ6 SynScan Skywatcher mount. Focal Length 2010 mmm.
M51 same picture as previous one, different processing and all frames included unfortunately also the egg-shaped stars.
November 2016 NGC891 D750 C11
November 2016 NGC 7331 in Pegasus. Nikon D750 and the C11
Crop of the left image, reprocessed by Jean Lammertyn. The pink H-Alfa area's are visible
2016 August 7 Image of M33 in Triangulum, TS65mm APO and nIkon D5100 6x900s on ISO800 Optolong CLS Clip-In filter. Site: Castellet, Vaucluse, France SQM 21,28
2016 May 5th
The Needle Galaxy in Coma Berenices. 50x120s on ISO1600 with the Nikon D750DX and the C11+ Starizona SCT Corrector LF @F7.2 Lots of issues with this image as the conditions and the image train were not 100%
April 2016: M51
Same image as the next one but processed by Jean Lammertyn in PixInsight
April 2016: M51 in Canes Venatici.
Image taken with the C11 Starizona F7.2 reducer/corrector Nikon D750 ISO1600 28x120" no darks no flats Processed in Nebulosity lost all color information. Using M48 and SCT 2" connectors the field was vignetted and skewed.
April 11th 2016: M101 in Ursa Major. A wide-field taken with the TS65APOQ flatfield, Nikon D5100 (Unmodded) 54x300s on ISO800. SQM 20,44 IDAS LPS D1. The focla plane was a bit skewed resulting in unsharpness left lower and right upper corner.
M82 February 2016 C11 SCT Corrector LF F7 Approx. 50 minutes on 800 ISO no LPS
2015 September NGC891 in Andromeda is an edge-on galaxy. Picture taken in Meldert Sunday October 12th. In total 2hrs of integration time with the C11 at F6.3 Nikon D5100 @ 800 ISO. SQM values were around 20,30 a bit hazy
2015 September The same picture as on the right, but processed a bit softer. Special care was taken to decrease star appearance. Also the color was softened.
2015 September The major galaxy from Andromeda, about 3 hours of Nikon D5100 unmodified DSLR color frames each 300 seconds, with the TS65APO telescope of 420mm F6.5
M101 in Ursa Maior April 2015
April 2015 Virgo Cluster overview: 100+ galaxies on one picture!
M81 and M82 with the TS65APOQ and the ATIK 16HR+
M81 and M82 widefiled with the TS65APOQ 8x180s on ISO800 Nikon D6100 HEQ5 Unguided
2014 November 22nd M22 in triangulum and a vast open space around it. The 180mm Nikkor is for sure too short to picture detail in the galaxy but it clearly pictures the solitude of this star-island in space. M33 is a neighbour of our own galaxy.
2014 Oktober 27th ATIK16HR NGC891
April 2014 A cropped reprocessing of the picture below of M51
The supernova as discovered on January 22nd in the galaxie M82
This picture was taken with a simple 180mm Tele, which gives a very large field-of-view. To get the SN visible, some serious cropping was needed. Still it's showing very clearly. Noise levels are controlled by having 81 shots of 10" on ISO 800 stacked. Total imaging time 13 minutes. The Nikkor 180mm f2.8 was stopped down to F/4, Body Nikon D5100 and HEQ5 mount without active guiding. No CLS filter was used. The sky was not really good as passing clouds and high-altitude nebulosity passed by during the imaging. Of 180 frames about 100 had to be thrown away.
M51 Whirlpool galaxy with the FLT110mm APO from Patrick Jacobs
M82 picture C11 F6.3
2013 Comparing M31 120mm Achromat and Robtics 90mm Achromat