Telescope: Astro-Tech 8” f/8 Ritchey-Chretien, Orion Atlas EQ-G

Camera: QHY 367c Pro, Baader Mk III MPCC

Filter: GSO IR Blocking Filter

Guide scope: Astro-Tech 60mm, ASI120MM mini, PHD2

Exposure: 17x180sec, gain 2000, offset 50, 0C, saved as FITS

Darks: 32×180sec, gain 2000, offset 50, 0C, saved as FITS

Flats: 64×0.5sec, Tee shirt flats taken at dusk

Average Light Pollution: Red zone, Bortle 8, very poor transparency, moonlight

Lensed Sky Quality Meter: 17.2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: SharpCap Pro, Deep Sky Stacker, Nebulosity, Photoshop

M9 is a relatively bright modestly condensed (Class 8) globular cluster located 3 degrees to the southeast of Sabik in Ophiuchus. It is relatively close to the galactic core being about 5,500 light years from the galactic core and 26,000 light years from Earth. It is interesting to note the dark lane cutting across the lower right corner of this field as compared to the star rich field to the upper left indicating a swath of dust along the Milky Way blocking the light from the distant star fields beyond.

This was the first test image taken with my new to me QHY 367C Pro full-frame camera. This camera uses the same sensor as my full spectrum modified Nikon D810 and it will be interesting to compare the two. As it turns out this image was taken at a relatively low gain. I used a fairly conservative gain of 2000 for this image as compared to the unity gain for the 367 of 2800that I used here. It has also been a long time since I previously used SharpCap Pro for deepsky imaging. I have a few adjustments to make as I get familiar with this new camera, but this is a good start, particularly given the poor sky conditions and bright moonlight.

M9 is currently well placed in the southeast at sunset.

Telescope: Meade SN10 at f/4, Orion Atlas EQ-G

Camera: Canon EOS Ra

Filter: GSO IR Blocking Filter

Guide scope: Williams Optics 50mm, ASI290MM mini, PHD

Exposure: 81x20sec, ISO 800, saved as RAW

Darks: Internal (Long Exposure Noise Reduction On)

Flats: 32×1/5sec, tee shirt flats taken at dusk

Average Light Pollution: Red zone, poor transparency

Lensed Sky Quality Meter: 18.3 mag/arc-sec^2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: Backyard EOS, Nebulosity, Deep Sky Stacker, Photoshop

M63 is a beautiful spiral galaxy in Canes Venatici, the Hunting Dogs. It has an exceptionally tight spiral structure with a very beautiful and subtle color. The bright inner core is easy to see in small telescopes, while the outer spiral requires a modest scope and dark skies.

M63 is currently high overhead at dusk.

Telescope: Meade SN10 at f/4, Orion Atlas EQ-G

Camera: Full Spectrum Modified Nikon D810

Filter: GSO IR Blocking Filter

Guide scope: Williams Optics 50mm, ASI290MM mini, PHD

Exposure: 30x30sec, ISO 200, saved as RAW

Darks: Internal (Long Exposure Noise Reduction)

Flats: 32×1/50sec, tee shirt flats taken at dusk

Average Light Pollution: Red zone, fair transparency

Lensed Sky Quality Meter: 18.5 mag/arc-sec^2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: Backyard Nikon, Nebulosity, Deep Sky Stacker, Photoshop

NGC 5907, the Splinter Galaxy, in the upper left corner, is a very slender edge-on spiral galaxy with a small central bulge and a pronounced dust lane. The dust lane shows some wonderful detail and tints the core a beautiful amber color. The galaxy itself is something of a giant lying 59 million light years away and 180,000 light years across. M102, in the lower right corner, is a beautiful edge-on spiral galaxy that is nestled in between Draco, Bootes, and Ursa Major. It is almost exactly edge-on to our line of sight and shows an extremely thin profile with only a slight central bulge and a slender dust lane. In the lower left corner is another edge-on spiral, NGC 5908, and a tiny face-on spiral, NGC 5905.

M102 and NGC 5907 are currently high overhead at dusk.

Telescope: Meade SN10 at f/4, Orion Atlas EQ-G

Camera: Full Spectrum Modified Nikon D810

Filter: GSO IR Blocking Filter

Guide scope: Williams Optics 50mm, ASI290MM mini, PHD

Exposure: 98x30sec, ISO 200, saved as RAW

Darks: Internal (Long Exposure Noise Reduction)

Flats: 32×1/50sec, tee shirt flats taken at dusk

Average Light Pollution: Red zone, poor transparency

Lensed Sky Quality Meter: 18.4 mag/arc-sec^2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: Backyard Nikon, Nebulosity, Deep Sky Stacker, Photoshop

M106 is a beautiful, reasonably bright (Mv 8.4) spiral galaxy that is likely a member of the Ursa Major Group. In this image you can glimpse the outer veil of stars surrounding M106 as well as numerous background galaxies sprinkled across the field including NGC 4346 to the lower left, NGC 4220 to the upper right, and NGC 4217 to the lower right. Just to the upper right of M106 are 3 tiny background galaxies; NGC 4228, 4231, and 4232

M106 is currently high overhead at dusk.

Telescope: Meade SN10 at f/4, Orion Atlas EQ-G

Camera: Full Spectrum Modified Nikon D810

Filter: GSO IR Blocking Filter

Guide scope: Williams Optics 50mm, ASI290MM mini, PHD

Exposure: 154x20sec, ISO 200, saved as RAW

Darks: Internal (Long Exposure Noise Reduction)

Flats: 32×1/50sec, tee shirt flats taken at dusk

Average Light Pollution: Red zone, fair transparency

Lensed Sky Quality Meter: 18.5 mag/arc-sec^2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: Backyard Nikon, Nebulosity, Deep Sky Stacker, Photoshop

This is M81 (bottom) and M82 (top), two bright spiral galaxies lying about 12 million light years away in Ursa Major. At present, these two galaxies are about 150,000 light years apart, though a few hundred million years ago the two passed very close to each other. The dark dust lane slashing across M82 is one result of this close encounter with M81 as are the blue star formation regions in M81. To the lower left is the small spiral galaxy NGC 3077. This galaxy is about 19,200 light years across and 13 million light years distant.

M81 and M82 are currently high in the northwest at dusk.

Telescope: Meade SN10 at f/4, Orion Atlas EQ-G

Camera: Full Spectrum Modified Nikon D810

Filter: GSO IR Blocking Filter

Guide scope: Williams Optics 50mm, ASI290MM mini, PHD

Exposure: 109x20sec, ISO 200, saved as RAW

Darks: None (dithered every 4 images)

Flats: 32×1/50sec, tee shirt flats taken at dusk

Average Light Pollution: Red zone, poor transparency

Lensed Sky Quality Meter: 18.3 mag/arc-sec^2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: Backyard Nikon, Nebulosity, Deep Sky Stacker, Photoshop

Markarian’s Chain is a remarkable arc of galaxies within the Virgo Galaxy Cluster. The elliptical galaxies M84 and M86 are the most prominent members at the lower right with the other members of the Chain sweeping along an arc to the upper left ending with the spiral galaxy NGC 4477. If you look closely at NGC 4477 you can see a nearly vertical line. This is the track of (1816) Liberia, a tiny asteroid that was 89 million miles away out in the asteroid belt and shining at Mv 13 when this image was taken.

The Virgo Galaxy Cluster is currently well placed high overhead as twilight deepens.