Back vdB158vdB 158 - The Checkmark Nebula Click to display the full resolution Object InfoTypeNebulaConstellationCassiopeia Capture DetailsDateNovember 6, 2026LocationLittle Blair Valley, Anza-Borrego Desert, CAExposureLum 36x10, R 9x10, G 9x10, B 9x10 (bin 1x1) EquipmentOpticsTakahashi FSQ-106N RefractorFocal Length530mm @f/5MountAstro-Physics 900GTOCameraFLI ML-16200FocuserFLI AtlasFiltersAstrodon Gen 2 LRGBSoftwareNINA, PixInsight, Photoshop