November 21, 2024

Archives for October 3, 2021

NGC 457 – The Owl Cluster in Cassiopeia

NGC 457 – The Owl Cluster in Cassiopeia

Telescope: LXD75 SC8 @ f/6.3, LX65 mount, altaz mode

Camera: Stock Canon 600D, interval timer

Filter: GSO IR Blocking Filter

Guide scope: None

Exposure: 38x10sec, ISO 1600, saved as RAW

Darks: Internal (Long Exposure Noise Reduction On)

Flats: 32×1/25sec, Tee shirt flats taken at dusk

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

Lensed Sky Quality Meter: 18.2

Stacking: Mean with a 1-sigma clip.

White Balance: Nebulosity Automatic

Software: Deep Sky Stacker, Nebulosity, Photoshop

NGC 457 is one of my favorite open clusters in just about any size telescope. It makes a fine target for binoculars and small telescopes and becomes a very rich field in larger scopes. The two bright distinctive foreground stars makes it fairly easy to locate. In a small telescope it is worth taking some time with this field. At first your eye may only see the two bright foreground stars and a few of the brighter stars of the cluster. As your eyes relax you may start to see some of the fainter background stars and the cluster will begin to blossom into a beautiful field of stardust.

This is part of a series of images that I am taking to explore deepsky imaging using fairly basic equipment and techniques and this is the third image taken with my LX65. I have been very pleased with how well this system works for basic deep sky imaging.

NGC457 is currently well placed high in the northeast after sunset.