Astro Images

First Saturn capture

May, 2008

First-ever attempt to do planetary photography using stacked video frames. This is the best 1000 of 1500 frames, stacked.

Same Saturn, Better Processing

After spending several weeks reading books and tutorials on Registax, this is the same Saturn data as above, but re-processed from the original image stream . Better aligning, stacking, and wavelet enhancement. I think this is pretty amazing considering it is the same data as the image above.

M27, the Dumbbell Nebula

July, 2008

This is pre-observatory, and with early equipment. G11 mount set up in my driveway, and me sitting in the car to stay warm while exposures run.

I actually spent the evening capturing data to analyse and tune periodic error in the mount but then did a “what the heck” capture of M27, just to see. This is a single 30-second exposure, unguided, no PEC. I’m forcing myself to stay with monochrome for deep-sky imaging until I am comfortable I have it mastered, then I’ll add colour processing.

M13 globular cluster

July, 2008

This was a test shot after an evening of practicing drift alignment. Clouds were rolling in and there was a full moon, so conditions were poor. PEC not trained and no guiding, so exposures were short. This is 10 30-second subs, stacked with Maxim DL.

M101, Pinwheel Galaxy

August, 2008

First guided exposure “keeper”, after a month of adjusting worm gear, tracking periodic error, making a flat frame box, etc. I'm pretty sure there is a lot more information in the captured data, but I haven't learned to draw it out in post-processing yet.

I haven’t learned to work out North/East orientation of images yet. Note two small galaxies appear below M101 – I think the larger is NGC5477.

M31, M32, and M110 galaxies

September, 2008

Not at all pleased with the colour – this was my first real attempt at filters, and there are problems here with exposure balance, alignment, etc. Basically everything that I could do wrong, I did. But I was so thrilled to see anything like this that, for me, it’s a keeper anyway.

M33

September, 2008

First reasonably successful LRGB image via filters, with guider running. Guiding is still a bit erratic – need to tune backlash settings for mount better. However, it held steady for the 5-minute subs in this image. Would have liked to add more light, but everything frosted over at about 11:30 PM.

M37

A test image after moving the mount to a permanent pier, this M37 worked out nicely. I like this cluster, with its large dense centre and busy background of stars. I’m looking forward to doing another one in colour.

Horse Head and Flame Nebulae

This image of IC434, Barnard 33 (the Horse Head Nebula), and NGC2024 (the Flame Nebula) is the start of a larger project. This monochrome image was taken in Hydrogen Alpha light during a nearly full moon (H-Alpha is essentially immune to moon light pollution). Colour will be added later when more imaging time presents itself.

This is where I started keeping better records of the technical details of images. This is 1.5 hours of H-Alpha exposure (6 x 10 minute + 2 x 15 minute), calibrated with darks, flats, and bias frames. Imaged December 29, 2009, about 9:00 PM.

SXV-H9 camera with Astronomik H-Alpha filter, on SV80S refractor, on pier-mounted Losmandy G11 mount, guided by SXV guider on a Pronto. 2.77 arc-seconds per pixel resolution. This is an uncropped full frame, binned 1×1.

M97 (Owl Nebula)

Test image of M97 (the Owl nebula). Autoguiding is temporarily offline, so this test image is unguided. 6×60 seconds each of L (1×1), R, G, B (2×2). C9.25 with 0.68 reducer at 0.83 ” / pixel.

M27 “Dumbell Nebula”

100 minutes in 10-minute subframes with ST-2000XCM camera on an AT8RC Ritchey-Chrétien with 0.75x reducer, autoguided on a Losmandy G11 mount.

M15 Globular Cluster

90 minutes (15 5-minute, 15 1-minute) on ST2000XCM, on AT8RC astrograph with 0.75x reducer, autoguided on a Losmandy G11.

M27, Different Data

1 hour each of Luminance, H-Alpha (blended with Luminance), R, G, and B, all in 5-minute subs. RGB at 2×2. QSI583wsg on AT8RC on G11, autoguided by Lodestar.

M51, “Pinwheel Galaxy”

First draft of colour (LRGB) combination after a month of data acquisition. 90 minutes of Luminance, and 90 each of Red, Green, and Blue binned 2×2. QSI583 camera on an AT8RC, autoguided with a Lodestar, all on a Losmandy G11.

M81, “Bode’s Galaxy”

A test image after some gear adjustment. 30 minutes total monochrome, as 6 5-minute exposures. QSI583 camera on AT8RC, on Paramount MX, autoguided with Lodestar.