September 23, 2024

Waxing Gibbous Moon – 7/9/2022, 9:00pm EDT

Waxing Gibbous Moon – 7/9/2022, 9:00pm EDT

Telescope: Astro-Tech RC8 @ f/8, Orion Atlas EQ-G

Camera: QHY 367c Pro, Baader Mk III MPCC

Filter: GSO IR Blocking Filter

Exposure: 64x15ms, gain 2000, offset 50, 0C, saved as FITS

Seeing: fair, 3/5

White Balance: Nebulosity Automatic

Software: SharpCap Pro, Nebulosity, Registax, Photoshop

This is the first-light image taken with my new to me QHY 367c Pro full-frame camera. As sunset approached I used the moon to provide a rough alignment for the mount, slewed to Vega to set the focus, and then back to the moon to take this image set. Off to a great start!

Comet C/2017 K2 (PanSTARRS) – 6/24/2022 0h20m EDT

Comet C/2017 K2 (PanSTARRS) – 6/24/2022 0h20m EDT

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

Camera: Full Spectrum Modified Nikon D810, Baader Mk III MPCC

Filter: GSO IR Blocking Filter

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

Exposure: 12x120sec, ISO 200, saved as RAW

Darks: Internal (Long Exposure Noise Reduction On)

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

Average Light Pollution: Red zone, Bortle 8, good transparency

Lensed Sky Quality Meter: 18.8

Stacking: Average

White Balance: Nebulosity Automatic

Software: Backyard Nikon, Nebulosity, Photoshop

Comet C/2017 K2 (PanSTARRS) is a relatively small, faint comet that is slowly crossing southwards across Ophiuchus in the evening sky. As comets go, this comet is visually challenging, though is may be glimpsed in a small telescope as a faint star-like core with a diffuse coma. Physically, this is an amazing comet. It was discovered in May of 2017 when it was in the outer solar system between the orbits of Saturn and Uranus and approaching from deep space well above of the plane of the planets. Comet 2017 K2 is likely a visitor from the Oort Cloud making its one and only pass through the inner solar system before departing for interstellar space, never to return. So, while it may be challenging to locate, it’s a fascinating object to track down.

C/2017 K2 (PanSTARRS) is currently well placed in the eastern sky at dusk. Although it will remain relatively faint, it will remain visible from the northern hemisphere until August as it flows southwards across Ophiuchus and Scorpius. It will be closest to the Earth (167 million miles) while still inbound to the sun on July 17th, and it will be closest to the sun (about as far as the orbit of Mars) on December 19th while it will be visible only from the southern hemisphere.

M63 – The Sunflower Galaxy in Canes Venatici

M63 – The Sunflower Galaxy in Canes Venatici

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.

M102 and NGC 5907 – Edge-on Galaxies in Draco

M102 and NGC 5907 – Edge-on Galaxies in Draco

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.

M101 – Face-on Spiral Galaxy in Ursa Major

M101 – Face-on Spiral Galaxy in Ursa Major

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: 94x30sec, 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

M101 is a wonderful face-on spiral just north of the handle of the Big Dipper. It is also something of a monster, nearly twice the size of the Milky Way, making it one of the largest spirals known.

M101 is located high overhead at dusk.

M106 – Spiral Galaxy in Canes Venatici

M106 – Spiral Galaxy in Canes Venatici

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.

Waning Gibbous Moon – 6/17/2022, 2:50am EDT

Waning Gibbous Moon – 6/17/2022, 2:50am EDT

Telescope: Astro-Tech RC8 @ f/8, Orion Atlas EQ-G

Camera: Full Spectrum Modified Nikon D810, Baader Mk III MPCC

Filter: GSO IR Blocking Filter

Exposure: 64×1/500 sec, ISO 320, saved as RAW

Seeing: fair, 3/5

White Balance: Nebulosity Automatic

Software: Backyard Nikon, Nebulosity, Registax, Photoshop

This is a quickie image taken of the moon this morning as I stepped outside to check on my gear. I had intended to cover everything up after moonrise, but the sky was so clear I decided to push ahead until dawn.

M81 & 82 – Spiral Galaxies in Ursa Major

M81 & 82 – Spiral Galaxies in Ursa Major

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.

Markarian’s Chain – Galaxy Group within the Virgo Galaxy Cluster

Markarian’s Chain – Galaxy Group within the Virgo Galaxy Cluster

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.

M56 – Globular Cluster in Lyra

M56 – Globular Cluster in Lyra

Telescope: Unitron 155 4” f/15 refractor, Atlas EQ-G

Camera: Canon EOS Ra full frame DSLR

Filter: 2” GSO IR Cut Filter

Guide scope: Orion 50mm Guidescope, ASI120MM, PHD, Dithered every 4 subs

Exposure: 34x120sec, ISO 1600, saved as RAW

Darks: Internal (Long Exposure Noise Reduction)

Flats: 32×1/10s tee shirt flats taken at dusk

Average Light Pollution: Bortle 8, fair transparency

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

Stacking: Mean with a 1-sigma clip

White Balance: Nebulosity Automatic

Software: Backyard EOS, Deepsky Stacker, Nebulosity, Photoshop

M56 is a relatively small, dense globular cluster that tends to get a bit lost against the background Milky Way. I have always found this to be a somewhat challenging object visually (at least from my backyard) but it blossoms beautifully with a camera.

M56 currently rises in the northeast as the sky darkens.