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iOptron SkyHunter Compact Dual GoTo Mount - Equatorial Package - SHAQ
$585.43
SharpStar 94EDPH - 94 mm f/5.5 APO Triplet Refractor -Open Box
$1,371.30
Explore Scientific FirstLight 4" Doublet Refractor - FL-AR1021000
$343.73
LUNT Blocking Filter B400 - 1.25" Star Diagonal (OPEN BOX)
$252.55
Celestron Ultima-LX 13mm Wide Angle Eyepiece (1.25 & 2") (Pre-owned)
$116.25
Long Perng 110mm f/6 FPL53 Glass ED Doublet Refractor - LP660
$1,012.37
StarField Coma Corrector for f/3 - f/6 Newtonians - SF-CM-01
$141.11
SharpStar 0.8X Focal Reducer for 61EDPHII & Full Frame Cameras - 61EDPH-FR
$209.13
Founder Optics 9 mm Marvel 80-Degree Wide Angle Eyepiece - 1.25"- M-LERW-9
$205.51
Meade Classic LX200 Revision 3.2 HandController - (Pre-owned)
$252.55
Founder Optics 1X Universal Field Flattener - FLAT1.0
$116.51
Founder Optics 9mm Marvel 80° Wide Angle Eyepiece 1.25" M-LERW-9
$199.00
Celestron StarSense AutoAlign Device - 94005
$397.28
Founder Optics 62mm f/4.8 Draco Quintuplet ED Refractor ((Open Box )
$995.01
Celestron Dew Heater Ring for 5" Celestron SCT OTA - 94055
$40.52
Founder Optics Bino-One 72mm ED Spotting Scope w/ Binoviewer /Lenses (open box)
$700.59
Explore Scientific HR Coma Corrector for Newtonians - HRCC02-00
$271.37
Starfield 6" f/4 Imaging Newtonian Telescope - SF-N6-01 (Made in Taiwan)
$505.83
Founder Optics 14 mm Marvel 80-Degree Wide Angle Eyepiece - 2"- M-LERW-14
$205.51
iOptron CEM26 Center-Balance GoTo Equatorial Mount - iPolar - LiteRoc - C261A3
$1,330.78
Founder Optics 3 mm LER Alien 1.25" Eyepiece - A-LER-3
$88.28
iOptron Photron RC10 - 10 inch Ritchey-Chrétien Telescope OTA - 6113
$2,459.66
Celestron Ultima Edge 15 mm Flat Field 1.25" Eyepiece - 93451
$133.87
Founder Optics 6 mm Marvel 80-Degree Wide Angle Eyepiece - 1.25"- M-LERW-6
$205.51
Founder Optics 7.9" Losmandy-Style Universal Dovetail Plate - DP-L7.9
$44.14
Explore Scientific 102mm F/7 Triplet - Hoya FCD100 - Carbon Fiber- OTA
$1,990.01
Celestron Regal M2 80ED Zoom Spotting Scope - 52305
$854.62
ZWO Seestar S30 All-in-One Smart Telescope - SS-S30
$505.83
Kite Optics Silicone Jacket for APC 42 Binoculars - Marine Blue - K284145
$43.42
Founder Optics 12.5 mm LER Alien 1.25" Eyepiece - A-LER-12.5
$88.28
iOptron 5kg Counterweight for C40/G45/C60/C70/ETC - 8027
$81.77
Founder Optics 9 mm LER Alien 1.25" Eyepiece - A-LER-9
$88.28
Founder Optics 14.5 mm LER Alien 1.25" Eyepiece - A-LER-14.5
$88.28
Founder Optics 1.25" Dielectric Diagonal Mirror - DIA1.25-M
$97.69
Meade Infinity 60/70 Carry Bag - 609001
$36.15
ZWO ASI678MM 8.29MP USB 3.0 Monochrome Camera - ASI678MM
$358.93
Founder Optics 15" Vixen-Style Universal Dovetail Plate - DP-V15
$53.55
Sky-Watcher 0.9X Reducer/Flattener for Evolux 82ED Refractor - S20207
$376.29
Kendrick Digifire FX Pro Digital Dew Controller - 2001-FX-Pro
$285.84
Askar 0.75X Full Frame Reducer for PHQ 65 - 65PHQ-RED
$180.19
Askar f/3.9 Reducer for FRA400 Refractor - FRA400-RED
$261.23
Celestron Ultima Edge 18 mm Flat Field 1.25" Eyepiece - 93452
$160.65
Meade Power Cord w/Cigarette Lighter Adapter #607 - 07043
$28.95
Sky-Watcher ProED 80 Reducer/Corrector - 0.85x - S20200
$369.06
Sky-Watcher ProED 100 Reducer/Corrector - 0.85x - S20201
$383.53
Sky-Watcher 0.9X Reducer/Flattener for Evolux 62ED Refractor - S20206
$366.16
Founder Optics 4 mm Marvel 80-Degree Wide Angle Eyepiece - 1.25"- M-LERW-4
$205.51
Meade Polaris DC Motor Drive for Polaris Series Equatorial Telescopes - 616000
$47.04
About us
rkastro – Rare & Hard-to-Find Astronomy Gear
Welcome to rkastro, where the unique, the rare, and the hard-to-get meet the hands of true skywatchers. We specialize in astronomical equipment you won’t find just anywhere—premium telescopes, cutting-edge astrophotography tools, and must-have accessories for serious stargazers.
We carry both New & Used gear.
Our inventory is always changing, so if you see something that catches your eye, grab it before it’s gone!
🔭 Limited-stock & specialty items – We focus on the rare and in-demand.
🚀 Fast shipping – .
If you’re hunting for something specific or just love discovering new astrophotography and observation tools, rkastro is the store to watch. Keep checking back—we’re always adding new finds!
Welcome to rkastro, where the unique, the rare, and the hard-to-get meet the hands of true skywatchers. We specialize in astronomical equipment you won’t find just anywhere—premium telescopes, cutting-edge astrophotography tools, and must-have accessories for serious stargazers.
We carry both New & Used gear.
Our inventory is always changing, so if you see something that catches your eye, grab it before it’s gone!
🔭 Limited-stock & specialty items – We focus on the rare and in-demand.
🚀 Fast shipping – .
If you’re hunting for something specific or just love discovering new astrophotography and observation tools, rkastro is the store to watch. Keep checking back—we’re always adding new finds!
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Seller feedback (4,223)
- 8***1 (100)- Feedback left by buyer.Past 6 monthsVerified purchaseI ordered the Dwarf 3. I am in the United States. It arrived much quicker than expected (2days) and was new in the box. This seller has great communication. He answered my questions concerning payment and international shipping very quickly. The only thing I would warn potential buyers about is to be aware of the current tariffs ongoing in the USA. The Dwarf 3 is tariffed by its country of origin (China/ 100% tariff) not the current 25% tariff on Canada. This is obviously not seller's fault.
- l***f (465)- Feedback left by buyer.Past 6 monthsVerified purchaseAAA+++ The wedge was shipped fast. It was packed well. It was as described. I arrived on great condition. It was a great value. Thanks
- e***e (101)- Feedback left by buyer.Past yearVerified purchaseQuick Shipping, excellent seller, would buy from again. Item as described and answered all my questions prior to purchase.Reply from: rkastro- Feedback replied by seller rkastro.- Feedback replied by seller rkastro.Thank you!
- r***l (631)- Feedback left by buyer.Past 6 monthsVerified purchaseExactly as pictured, exactly what I was seeking. All parts supplied in the photo. Shipping was fast and packing was excellent. No problems at all.
- a***a (102)- Feedback left by buyer.Past 6 monthsVerified purchaseExcellent seller. Great communication. Product arrived earlier than expected. Thank you
- o***o (170)- Feedback left by buyer.Past yearVerified purchaseItem exactly as described. Prompt dispatch. Well packaged. Excellent communication. Highly recommended.Reply from: rkastro- Feedback replied by seller rkastro.- Feedback replied by seller rkastro.Thank you!