September 22, 2024

Saturn – 9/6/2022 22h40m EDT

Saturn – 9/6/2022 22h40m EDT

Telescope: Celestron C11 @ f/25, Orion Atlas EQ-G

Camera: ZWO ASI462MC, 2.5x Powermate

Filter: Highpoint Scientific IR Filter

Seeing: poor, 2/5

Exposure: 5% of 5min @ 15msec, gain 400, saved as SER

Histogram: 70%

White Balance: Nebulosity Automatic

Software: SharpCap Pro, AutoStakkert, Registax, Nebulosity, Photoshop

This is my first image from the opening of the 2022 planetary imaging season. I still have lots to learn, but I’m off to a good start!

Saturn is well placed in the evening sky wising in the east as the sun set and high in the south by midnight.

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.

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.

Full Moon – 10:30pm 4/16/2022 EDT

Full Moon – 10:30pm 4/16/2022 EDT

Telescope: Unitron 155c 4” f/15

Camera: Canon EOS Ra

Filter: 2” GSO IR Cut Filter

Exposure: 64×1/500sec, ISO 1600, saved as RAW

Seeing: Poor, 2/5

White Balance: Nebulosity Automatic

Software: Backyard EOS, Autostakkert, Registax, Nebulosity, Photoshop

This is quick image of the full Pink Moon taken with my Unitron 155c and Canon EOS Ra.

Earthshine – 9:00pm 4/3/2022 EDT

Earthshine – 9:00pm 4/3/2022 EDT

Telescope: Unitron 155c 4” f/15

Camera: Canon EOS Ra, Interval Timer (no computer)

Filter: 2” GSO IR Cut Filter

Exposure: 16x2sec, ISO 1600, saved as RAW

Seeing: Fair, 3/5

White Balance: Nebulosity Automatic

Software: Registax, Nebulosity, Photoshop

After taking a set of images of the crescent moon I decided to try and capture the beautiful Earthshine. The source images were gorgeous without a hint of color fringing. I had to remove a ghost image that indicates that the objective in this old Unitron does not have AR coatings. Processing also brought up a little bit of color fringing, but it is still very limited. Note the little star trail just above the moon that shows how far the moon moved during the time the source images were being taken.

Waxing Crescent Moon – 9:00pm 4/3/2022 EDT

Waxing Crescent Moon – 9:00pm 4/3/2022 EDT

Telescope: Unitron 155c 4” f/15

Camera: Canon EOS Ra, Interval Timer (no computer)

Filter: 2” GSO IR Cut Filter

Exposure: 32×1/50sec, ISO 800, saved as RAW

Seeing: Fair, 3/5

White Balance: Nebulosity Automatic

Software: Registax, Nebulosity, Photoshop

This is quick test image taken with my 60 year old Unitron 155c on its second night out. During this test I found that the 155c was much easier to point and to fine tune the field than I had expected. I was particularly interested in whether I could make fine adjustments in the R.A. as this model lacks the secondary fine R.A. control meaning that you cannot make fine adjustments in R.A. while the clock drive is installed. This turned out not to be a problem. The field of view of the full frame EOS Ra is large enough that pointing the scope was relatively easy. To make fine adjustments in R.A. I simply pointed the scope slightly west of the target, and then turned the clock drive off, letting it drift to the center of the field, and then turning the clock drive back on. Easy peasy. The clock drive itself performed flawlessly off of the 120vac output from my lithium ion battery pack, though I need to work on the polar alignment to get the best performance from it. It is certainly plenty good enough for visual and if I get serious about imaging with this scope I should look at mounting it on my Atlas.

The Full Worm Moon – 10:00pm 3/17/2022 EDT

The Full Worm Moon – 10:00pm 3/17/2022 EDT

This is an excellent example of the high resolution performance of the Unitron 142. I was pleasantly surprised by the lack of color fringing with this relatively long f/ratio scope. Note the lunar terminator sweeping across the southern highlands, indicating that the moon is passing north of the Earth’s shadow.

Waxing Gibbous Moon – 9:00pm 3/14/2022 EST

Waxing Gibbous Moon – 9:00pm 3/14/2022 EST

Telescope: Unitron 142 3” f/15

Camera: ZWO ASI 294MC

Filter: Meade IR Cut Filter

Exposure: 128×0.005sec, Gain 200, saved as PNG

Seeing: Good, 4/5

White Balance: Nebulosity Automatic

Software: SharpCap Pro, AutoStakkert, Registax, Nebulosity, Photoshop

This 50 year old Unitron produces a sharp, high contrast image with little or no chromic aberration. The 142 equatorial mount is very stable with excellent slow motion controls and a very accurate synchronous drive. I was curious to see how well it performs with basic imaging and this is the first test image. I chose to use my uncooled ASI294MC as is it a very lightweight color camera with a modest size chip and since there is no shutter there wasn’t a problem with vibrations. This does a fairly good job showing the excellent image quality and the lack of color fringing. Very nice!

Snow Moon – 10:40pm 2/15/2022 EST

Snow Moon – 10:40pm 2/15/2022 EST

Telescope: 8” Meade Wide Field LX200GPS @ f/6.3 (Native), Baader Mk III MPCC

Camera: ZWO ASI 294MC

Filter: GSO IR Blocking Filter

Exposure: 128×0.001sec, Gain 200, saved as TIFF

Seeing: Fair, 3/5

White Balance: Nebulosity Automatic

Software: SharpCap Pro, Registax, Nebulosity, Photoshop

This image was taken as part of in initial test using a Baader Mk III MPCC with this wide field 8” SCT and the original, uncooled version of the ASI 294MC. I’m configuring this for remote observing, but it is working so well that I’m going to conduct some additional tests to see how well it works for general purpose imaging.