Image Description and Details : Informally known as the 'Little Trifid Nebula', Sh2-82 is a relatively small emission nebula surrounded by a blue reflection nebula. It is embedded in the dark nebula LDN 727 and is the site of some star formation and young stellar objects. Located at a distance of approximately 3600 light years, Sh2-82 is ionized by the star HD 231616, which can be seen near the center.

Own remote observatory, 50 km from Kiev, Bortle 4 zone. Imaged during September 2020 - August 2021. AZ-EQ6 mount, ONTC8 newton, QHY22. Guide - OAG with Lodestar camera.
Astrodon 5nm Ha: 31 x 600s;
Astrodon L: 120 x 300s;
Astrodon R: 53 x 300s;
Astrodon G: 60 x 300s;
Astrodon B: 93 x 300s;
Total exposure - 32 hr.
Captured in SGP, processed in Pixinsight.

Copyright: Sergiy Vakulenko

Image Description and Details :

The Whirlpool Galaxy is a classic spiral galaxy. Known as M51 and NGC 5194, this galaxy may have been the first galaxy for that identified spiral structure. It is located at a distance of 30 million light years from the Sun. Measuring 60,000 light-years across, it is one of the brightest and most beautiful galaxies in the sky. The Whirlpool Galaxy can be seen with good binoculars in the constellation Canes Venatici. The M51 galaxy belongs to the Sc type spiral galaxies and is the main member of a whole group of galaxies. Astronomers suggest that the appearance of the spiral structure of the galaxy M51 is mainly due to the gravitational influence of a small satellite galaxy NGC 5195.

Also in the picture, next to M51, you can see the galaxies IC4277, IC4278 plus many small galaxies in the background.

This image was originally intended to capture an extragalactic hydrogen cloud near M51. However even 22 hours of exposure through the Ha filter gave no hint of it.

Own remote observatory, 50 km from Kiev, Bortle 4 zone. Imaged during February - June 2021. AZ-EQ6 mount, ONTC8 newton, QHY22. Guide - OAG with Lodestar camera.
Astrodon 5nm Ha: 88 x 900s;
Astrodon L: 228 x 300s;
Astrodon R: 40 x 300s;
Astrodon G: 40 x 300s;
Astrodon B: 70 x 300s;
Total exposure - 53 hr.
Captured in SGP, processed in Pixinsight.

Copyright: Sergiy Vakulenko

Image Description and Details :

M106 galaxy dominates on this image. Also known as NGC 4258, M106 is about 80,000 light-years across and 23.5 million light-years away, the largest member of the Canes II galaxy group. For a far far away galaxy, the distance to M106 is well-known in part because it can be directly measured by tracking this galaxy's remarkable maser, or microwave laser emission. Very rare but naturally occurring, the maser emission is produced by water molecules in molecular clouds orbiting its active galactic nucleus.

The following galaxies can also be seen in the image - NGC4248 (bright at the left-bottom of the center), UGC7356 (above M106) and a pair of galaxies NGC4231 & NGC4232 (in the lower left corner of the full-size image). Beneath NGC4248 is also a cluster of distant little fuzzy galaxies.

What interesting is that this image reveals one of the two faint hydrogen jets inside M106 (2 o'clock from galaxy center).

Own remote observatory, 50 km from Kiev, Bortle 4 zone. Imaged during March - May 2021. AZ-EQ6 mount, ONTC8 newton, QHY22. Guide - OAG with Lodestar camera.
Astrodon 5nm Ha: 68 x 900s;
Astrodon L: 125 x 300s;
Astrodon R: 40 x 300s;
Astrodon G: 40 x 300s;
Astrodon B: 70 x 300s;
Total exposure - 40 hr.
Captured in SGP, processed in Pixinsight.

Copyright: Sergiy Vakulenko

Image Description and Details :

Sh2-155 (also designated Sharpless 155 or S155) is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula. Sh2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 725 parsecs (2400 light-years) from Earth.

Copyright: Sergiy Vakulenko