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Heater ring provides the most efficient heating directly to the corrector lens to prevent the formation of dew Permanently mounts to your existin...

11-inch Dovetail bar (CGE)

Celestron’s legendary SkyMaster binoculars get an upgrade with ED objective lenses for superior images virtually free of chromatic aberration wit...

Attach a variety of accessories to your CGEM or CGE-style mount with this Universal Mounting Plate. Several different mounting holes to choose from...

Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Reflex-...

Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings Provides a 90° ...

Adapter for HyperStar 11 or HyperStar 9.25 and ZWO M42 Filter Drawer for ZWO Cooled Cameras

Astronomy’s Deep Space Mysteries calendar is back! The world's best-selling astronomy magazine brings you a calendar filled with stunning images, d...

Keep your optics clean with the innovative LensPen Use the soft retractable brush for removing loose particles and dust Clean smudges, fingerprin...

The DC Y Splitter cable is a good quality DC cable that contains pure copper as the wire core. Usage: By having two female connections it makes it ...

Helps prevent dew formation on the Schmidt corrector lens Prevents off-axis glare from entering the optical system Rigid body with a velvet-lined...

The SQA55 AF Kit is an astronomical accessory specially designed for the SQA55, which can be used with almost all brands of electronic focusers to ...

This adapter allows you to mount your binocular (porro or roof) to a tripod for added stability and convenience This useful adapter attaches to...

Astronomy’s Deep Space Mysteries calendar is back for 2026! The world's best-selling astronomy magazine brings you a calendar filled with stunning ...

Our popular ASI174MM CMOS Monochrome Imaging Camera is based on the Sony Exmor IMX174 2.35MP sensor with Pregius global shutter technology. Sony...

Name: Female T2 to T2 (11mm) Thread: M42*0.75 female to female thread Match Model: ASI1600, ASI294, ASI533, ASI183  Size: M42*0.75 Note: Camera in ...

The CAA M42 Male Adapter Plate by Starizona allows for easy adaptation to the ZWO CAA Rotator, providing male M42 threads. Made in the USA, this th...

Use this adapter to attach a ZWO PE200 pier extension to a Skywatcher EQ6 tripod.  It works with either a standard EQ6 white tripod or the black EQ...

M42 Male, to M42 Female, 21mm in length

Antlia SII EDGE narrowband filter optimizes the FWHM (full width half maximum) to 4.5nm bandpass. The suppression of optical density (OD)5 on unwan...

This adapter threads into the front (telescope side) threads of the SkyWatcher EvoStar ED focal reducer, allowing the reducer to be placed directly...

Named for the Latin word for butterfly, PENTAX Papilio 6.5x21 binoculars are the perfect choice for insect observation in the field and in museums ...

M54-M48-2mm adapter is independently developed by ZWO and mainly used for connecting to 2”EFW and M54 filter drawer.