Sharpless 126 (Sh2-126) is a large emission nebula in Lacerta, which appears in this image as a red background. The source of its ionisation is the intense ultraviolet radiation from the star 10 Lacertae, a blue main sequence star.
This region, with its faint nebular filaments, is part of Lacerta OB1, a giant star-forming region about 1200 light-years from Earth.
The reflection nebula LBN 437 lies near the emission nebula SH2-126. Also known as the Gecko Nebula due to its bizarre shape, it is curiously located within the constellation of the Lizard.
Imaging telescope: Takahashi FSQ130ED
Imaging camera: ASI 2600MM
Mount: JTW Trident P75
Guiding telescope: Takahashi FS60CB
Guiding camera: QHY 5L II M
Focal Extender / Reducer: 0.73X
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor, PixInsight.
Filters: Astrodon Ha (3nm), Astrodon LRGB.
Accessories: Robofocus Focuser controlled by Lunatico Armadillo, ATIK EFW 3, RB Focus Gaius, RB Focus Excalibur.
Dates: 15th Sep – 18th Sep. 2025
Frames: (Total)
Astrodon Ha 42 x 600″
Astrodon Lum 300 x 60″
Astrodon RGB 3 x 90 x 60″
Total integration = 16½ Hours .