ZWO Finder Shoe measuring 32 mm in width by 11 mm in height with a 60º angle. This dovetail base is included as standard equipment when you purchase the ZWO Mini Guide Scope. Offered here as an extra or standalone replacement.

ZWO ASI120MC-S 1.2 Megapixel USB3.0 Color Astronomy Camera for Astrophotography

ASI120S is a super speed and sensitive USB 3.0 camera. Up to 60FPS under 1280X960 full resolution!

ZWO Electronic 8 Position Filter Wheel - 1.25"/31 mm Sized

• A lightweight and low-profile filter wheel.
• Holds 1.25-inch mounted or 31 mm unmounted filters.
• Necessary for deep-sky imaging.

ZWO LRGB filter set designed for CCD/CMOS astrophotography.

Includes red, green and blue filters and a UV/IR-Cut 'L' filter.

Features: 

• Schott substrate material
• Thickness 1.1mm
• Fine-optically polished to achieve 1/4 wavefront surface finish
• 90% transmission at passband
• Infrared wavelength 700-1100nm cut-off
• Precision off-band blocking
• Multi-layer anti-reflection coating

• Excellent for planetary and deep-sky astrophotography
• Supports ASCOM and various ASCOM-compatible 3rd party software
• Step Motor, 7.5-degree step angle
• Load Capacity of up to 5 kg

• Lightweight design with 50 kg (110 lb) load capacity
• Easy to carry and transport inside your luggage
• Compatible with other mounts such as: iOptron GEM45 and GEM40, Rainbow Astro 135E, and Sky-Watcher AZ-GTi
• Tripod head plate offers three mounting points to match the AM5 head

ZWO 30mm f/4 Mini Guide Scope for ASI Cameras # 30120

• This 30 mm (1.18-inch) aperture ZWO Guide Scope is compatible with all ASI cameras.
• Optical Design: Doublet.
• Aperture: 30 mm (1.18 inches).
• Focal Ratio: f/4.
• Focal Length: 120 mm.
• Camera/Eyepiece Connection: M42x0.75.
• Back Focus: Adjustable, 0 to 20 mm.

ZWO 1.25" Ha SII OIII 7nm Narrowband Filter Set (ZWO-NB7NM1.25)

The three narrow band filters are ideal for photography of dim nebula. In addition, they suppress the light pollution.

The filters are homofocal with ZWO's L-RGB filter set, making them ideal for use in combination with these color filters.

H-alpha filter: has a bandpass of 7nm and passes light at 656nm wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution,

OIII Filter: The narrowband O-III 3nm filter is designed for nebula observation allowing 3nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, blocking out all other light.

SII filter: The narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 3nm which is designed for nebula fotography.

It is suitable for most emission nebulae, planetary nebulae and supernova remnants.

f you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next filter to consider adding to your collection after H-a and OIII is the SII (es-two) or sulfur filter. The SII filter, like H-a, is a deep red filter near 672 nm. H-a, OIII and SII filters provide that Hubble look for many emission nebula. Again, tri-color narrowband imaging with these three filters can be done with the moon up, so your equipment is not sitting dormant for several weeks.

The half-width of 7nm is the optimal choice for astrophotography. The contrast of the nebula is raised significantly.

ZWO OIII 36mm Unmounted Filter

OIII, or doubly ionized oxygen, emits light in the blue/green, or teal portion of the spectrum near 500 nm. Planetary nebulae and supernova remnants emit most of their light in the OIII line.

ZWO H-a 36mm Unmounted Filter

Hydrogen-Alpha is the most dominant emission line in star-forming regions. H-Alpha light is created by atomic hydrogen, and is responsible for the red color seen in most nebulae.

ZWO SII 36mm Unmounted Filter

Sulfur is in the deep red of the spectrum near 672 nm. When combined with H-a and OIII, these three filters will produce images with colors that are reminiscent of those taken by the Hubble Space Telescope.

These ZWO 36mm filters are unmounted. ZWO narrowband filters are fine-optically polished to reach an accuracy of 1/4 wave. Their performance is further enhanced by multiple layers of anti-reflection coatings.

1.25″ T-Mount Photography Camera Adapter

T-Adapter - Can Use Together with T-Ring - Connect a DSLR or SLR Camera to a Telescope