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DWARF 3 Dual Camera Smart Telescope - DWARF3 -
$616.36
Baader Maxbright II Binoviewer with 1.25"/T2 Nosepiece - BINO-1
$529.03
Long Perng 110mm f/6 FPL53 Glass ED Doublet Refractor - LP660
$1,001.50
Celestron Ultima-LX 13mm Wide Angle Eyepiece (1.25 & 2") (Pre-owned)
$115.00
Celestron 2" Ultima LX Eyepiece - 22mm (Pre-owned)
$139.34
Explore Scientific HR Coma Corrector for Newtonians - HRCC02-00
$268.45
LUNT Blocking Filter B400 - 1.25" Star Diagonal (OPEN BOX)
$249.84
Starfield 6" f/4 Imaging Newtonian Telescope - SF-N6-01
$572.70
SharpStar 94EDPH - 94 mm f/5.5 APO Triplet Refractor -Open Box
$1,356.58
TeleVue Radian 4mm Wide Angle Eyepiece (1.25") (Pre-owned)
$135.30
iOptron 5kg Counterweight for C40/G45/C60/C70/ETC - 8027
$80.89
Founder Optics 9mm Marvel 80° Wide Angle Eyepiece 1.25" M-LERW-9
$199.00
Celestron Ultima Edge 15 mm Flat Field 1.25" Eyepiece - 93451
$132.44
iOptron Tri-Pier - 8034
$724.46
Founder Optics 62mm f/4.8 Draco Quintuplet ED Refractor ((Open Box )
$984.32
iOptron SkyHunter Compact Dual GoTo Mount - Equatorial Package - SHAQ
$579.14
Celestron Ultima Edge 18 mm Flat Field 1.25" Eyepiece - 93452
$158.92
iOptron CEM26 Center-Balance GoTo Equatorial Mount - iPolar - LiteRoc - C261A3
$1,316.49
SharpStar 0.8X Focal Reducer for 61EDPHII & Full Frame Cameras - 61EDPH-FR
$206.89
Founder Optics 14 mm Marvel 80-Degree Wide Angle Eyepiece - 2"- M-LERW-14
$203.31
iOptron SkyHunter Compact Dual GoTo Mount -with tripod Alt-Az Package - SHAZ
$457.44
Celestron StarSense AutoAlign Device - 94005
$393.01
Celestron 2" Star Diagonal - Made in Japan! - 93519 (Pre-Owned)
$135.30
Explore Scientific FirstLight 4" Doublet Refractor - FL-AR1021000
$340.04
Founder Optics Bino-One Binoviewer, Eyepieces & Hard Case - BOV1.25
$393.01
Meade Classic LX200 Revision 3.2 HandController - (Pre-owned)
$249.84
Kendrick Digifire FX Pro Digital Dew Controller - 2001-FX-Pro
$282.77
ZWO Seestar S30 All-in-One Smart Telescope - SS-S30
$500.39
Explore Scientific 102mm F/7 Triplet - Hoya FCD100 - Carbon Fiber- OTA
$1,968.64
StarField Coma Corrector for f/3 - f/6 Newtonians - SF-CM-01
$139.59
Founder Optics 6 mm Marvel 80-Degree Wide Angle Eyepiece - 1.25"- M-LERW-6
$203.31
Founder Optics 1X Universal Field Flattener - FLAT1.0
$115.26
Founder Optics 4 mm Marvel 80-Degree Wide Angle Eyepiece - 1.25"- M-LERW-4
$203.31
Askar 0.75X Full Frame Reducer for PHQ 65 - 65PHQ-RED
$178.25
Founder Optics 9 mm Marvel 80-Degree Wide Angle Eyepiece - 1.25"- M-LERW-9
$203.31
iOptron Tri-Pier with Rolling Case - 8034-RC
$869.78
ZWO ASI678MM 8.29MP USB 3.0 Monochrome Camera - ASI678MM
$355.07
Askar f/3.9 Reducer for FRA400 Refractor - FRA400-RED
$258.43
Founder Optics 3 mm LER Alien 1.25" Eyepiece - A-LER-3
$87.34
Celestron Regal M2 80ED Zoom Spotting Scope - 52305
$845.44
Sky-Watcher 0.9X Reducer/Flattener for Evolux 62ED Refractor - S20206
$362.23
Meade Power Cord w/Cigarette Lighter Adapter #607 - 07043
$28.63
Founder Optics 7.9" Losmandy-Style Universal Dovetail Plate - DP-L7.9
$43.67
Explore Scientific 6.5 mm LER Waterproof Eyepiece - 82 Deg - 1.25" EPWP8265LE-01
$253.42
Founder Optics 13" Losmandy-Style Universal Dovetail Plate - DP-L13
$52.97
Celestron Dew Heater Ring for 5" Celestron SCT OTA - 94055
$40.09
Meade Polaris DC Motor Drive for Polaris Series Equatorial Telescopes - 616000
$46.53
iOptron Photron RC10 - 10 inch Ritchey-Chrétien Telescope OTA - 6113
$2,433.25
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 (4,222)
- 8***1 (100)- Feedback left by buyer.Past monthVerified 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 (464)- 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
- o***o (168)- Feedback left by buyer.Past 6 monthsVerified 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!
- e***e (101)- Feedback left by buyer.Past 6 monthsVerified 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!
- n***p (38)- Feedback left by buyer.Past 6 monthsVerified purchaseItem was as described or better. Quick delivery , fair price. Would definitely deal with them again.Reply from: rkastro- Feedback replied by seller rkastro.- Feedback replied by seller rkastro.Thank you!
- r***l (619)- 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.