Rosette Nebula NGC2237 and Open Cluster NGC2244

The Rosette Nebula (NGC2237) with Open Star Cluster NGC2244 is located in constellation Monoceros and about 5200 light years away from Earth. The nebula is a H II region (region with Ionised Hydrogen).

Setting : Nikon D7500 with TLAP80/480: lights 46x60s ISO3200 with darks and H-alpha 64x90s ISO6400 with darks. Pictures taken over two nights, eacht -3°C.

Stacking with APP and final editing using CS4 and DeNoise AI.

Planetary Nebula NGC2440

a

Planetary Nebula NGC2440 is located in constellation Puppis and is about 4000 lightyears away from Earth. According literature, it's central star is one of hottest white dwarf observed with a surface tempeature of 200.000K

Setting : Nikon D7500 and TAL200Kf/8.5: ISO800, 10x60s. Camera control with DigiCamControl and stacking with APP. Final editing using CS4 and DeNoise AI.

Christmas Tree Cluster NGC2264

The Christmas Tree Cluster and Cone Nebula (NGC2264) is located in constellation Monoceros and is about 2700 lightyears away from Earth.

Setting : Nikon D7500 and TLAPO80/480 f/6; lights 32x60s ISO2500 and H-alpha 21x90s ISO6400. Camera control with DigiCamControl and stacking using APP. Final editing with CS4 and DeNoise AI.

Collinder 69 Lambda Orionis Cluster

Collinder 69 (Cr 69), also knows as the Lambda Orionis Cluster in constellation Orion is an open star cluster and about 1300 lightyear away from Earth. The bright stars in the picture are Meissa (λ Ori) and Heka.

Setting : Nikon D7500 and TAL200K f/8.5, ISO800 and single shot of 30s. Final editing using CS4 and Denoise AI.

Planetary Nebula NGC2022

Planetary Nebula NGC2022 is located in constellation Orion (east from the star Meissa) and about 8000 light years away from Earth.

Setting : Nikon D7500 and TAL200K f/8.5, ISO1600 21x30s. Stacking with APP and final editing using CS4 and DeNoise AI.

Full Moon

Today Full Moon. Picture taken with Nikon D7500 and TAL200K f/8.5.

Focussing with H-Alpha

Focussing with a H-alpha filter isn't easy when you compare it without a filter. I'm using a bahtinov mask everytime when shooting pictures. When using no filters, I'm using live view of my DSLR to see whether the star is focussed. In case of using my H-alpha or OIII filter it's getting difficult using live view. Even when I increase ISO levels and shutter time. 

To conclude : I slew to a sharp star (eg Sirius, Vega, ..) with either the H-alpha or OIII filter and bahtinov mask and take a picture. Based on the picture I'm adjusting the focus and take another picture. I repeat this workproces untill the star is focussed. 

Sirius in H-alpha and with Bahtinov Mask