ZWO End of Year Sale · Nov 9 – Jan 3

Up to 10% off ZWO, now through January 3.

Cameras, mounts, focusers, filter wheels and Seestar smart telescopes. The sale price is already on the site. No code needed.

The Seestar S30 Pro is on sale at $962.35 (was $1,013) and in stock now. The new Seestar S30 Plus is open for pre-order, and the Celestron RASA 6 is on our shelf.

New · Pre-order now

ZWO Seestar S30 Plus

The S30 Plus sits between the original S30 and the S30 Pro. You get the four-element APO optics and a bigger main sensor than the S30, at a price well under the Pro.

• 30 mm quad APO, 160 mm focal length
• Two cameras: 3° telephoto for deep sky, 43.5° wide-angle for Milky Way, star trails and nightscapes
• Built-in light pollution filter for city and suburban skies
• Equatorial mode and Plan Mode, so it can work through a target list overnight
• About 6 hours of battery

$687 $724  Pre-order

Plus or Pro? If you want 4K images, mosaics and one-tap Milky Way stitching, go Pro. If you want the best value in a Seestar for deep sky, the Plus is it.

On sale · In stock now

ZWO Seestar S30 Pro: on sale and in stock

Sony IMX585 main sensor with four times the light-sensitive area of the original S30, an 84° wide-angle camera, 8K mosaics and active anti-dew. It weighs 1.65 kg. We have it in stock today.

$962.35 $1,013

For equatorial mode on either Seestar, add the ZWO TC20 tripod + TH10 head, $260.30 $274.

ZWO imaging gear

The AM3N, and the cameras that go on it

ZWO AM3N harmonic mount. 4.1 kg. Carries 8 kg with no counterweight, 13 kg with one. Switches between EQ and alt-az from the app, and runs on ASIAIR, ASCOM or INDI. It will carry a RASA 6 with room to spare.

$1,889.10 $2,099  2 in stock

Celestron · In stock

RASA 6: f/2.2 in an 8.4 lb tube

At f/2.2 the RASA 6 collects signal about ten times faster than an f/7 refractor. Exposures get short enough that many imagers skip the autoguider entirely. From a Bortle 7 backyard with a dual-band filter, that speed is what makes a deep-sky target work in one evening.

• 152 mm aperture, 335 mm focal length
• 3.8° usable field on sensors up to 22 mm diagonal
• Filter drawer for 2" and 1.25" filters, 12V MagLev cooling fan
• M42 adapter included, 17.5 mm back focus, matches ZWO cooled cameras
• CG-5 dovetail. This is a camera-only instrument, no eyepiece use

Good camera pairings: ASI585MM Pro (on sale above), ASI533 or ASI183 class sensors.

M42 with RASA 6 and an IMX183 colour camera. Image: Celestron.