The Pacman Nebula

This is a bicolour narrowband image of NGC281, the Pacman nebula, captured with 9 x 10min H-alpha frames and 12 x 10min OIII. The “white” parts in the middle of the nebula are where there is some OIII response in addition to H-alpha, and the yellow parts are where there is just H-alpha.

Cederblad 214

Cederblad 214, or Sharpless Sh2-171, is an emission nebula situated on the border of Cepheus and Cassiopeia. This image is from frames that were captured over two nights, and is from 13 x 10 min H-alpha exposures and 7 x 5min for each of R, G and B.

Space Cave

This is an image of Sh2-155, also known as the Cave Nebula. Taken on the William Optics GT-102 with an Atik One, the image was composed from 6 x 3minĀ each of R, G and B to get a bit of colour for the stars, and 22 x 10min H-alpha to capture the nebula, all binned 2×2.

The Eagle Nebula

This is an image of M16, the Eagle Nebula in Serpens. Taken through the WO GT-102, it was put together using 10 x 5min RGB images shot on an Atik 460ex SOC camera, and 12 x 10min through a hydrogen-alpha filter on an Atik One.

A Faint Planetary Nebula

Something different last night… Instead of going for the brightest non-stellar object in Hercules, I tried one of the faintest, inspired by the picture of it in this month’s Astronomy Now. This is planetary nebula Abell 39 – 25 x 10min frames with the Atik 460ex OSC. The small edge-on spiral galaxy visible at about 10 o’clock relative to the nebula is mag 16.6 PGC58246.

Edit: A couple of nights later I acquired 17 x 10min through an OIII filter, and combined them with the RGB image shown above. This made quite a difference, and made the nebula much more apparent!

M106

Following on from the recent image of M106, here’s a deeper image captured with the Atik 460ex colour camera and GT-102. Its 17 x 10min exposures in total.

Spring Galaxies

Here are a couple of images from last night. First up is face-on spiral galaxy NGC3344, possibly the most interesting object in the constellation of Leo Minor. William Optics 102GT with Atik One, 6 x 10min luminance exposures before the moon came up, and 6 x 5 min R, G and B binned 2×2.

Then there’s a quick look at M106 in Canes Venatici. This was 6 x 5 min R, G and B binned 2×2 after the moon had risen, and is a bit noisy, but the area would be worth revisiting when the sky’s a bit darker, as the annotated image shows.