Half pier compatible with Standard Camera tripods (3/8inch thread). Mounts and half pier are tightened with two M8 knob bolts, making them more secure than one 3/8 inch bolt. The half pier adapter rotates 360 degrees for easy polar alignment. Material : Aluminum (AL6061) Weight : 1.3kg Downlaod Drawing(PDF)

This adapter makes the bottom of the RST-300 and RST-135 mounts the same as the bottom of the AP Mach1 mount. A pier or tripod for AP Mach1 can be used for RST mount. Material: aluminum Weight : 0.7kg Drawing

Fixed focus adapter for 10-20 inch RC OTA. The original focuser can be removed and replaced with this adapter. - Inner diameter : 3.5inch - Travel : 39mm - 3.5inch to 2inch adapter included

Fixed focus adapter for 8-inch RC OTAs. The original focuser can be removed and replaced with this adapter. - Inner diameter : 2inch - Travel : 40mm

Vixen type Saddle Made in Taiwan Weight : 0.22kg

Half pier compatible with iOptron tripod. Material : Aluminum (AL6061) Weight : 1.6kg Download Drawing(PDF)

<The California Nebula> NGC1499 Ha + LRGB image. I hope it looks good. 11/19, 20, 21, 2019 ZWO ASI 1600mm (Astronomik Ha 6nm) Ha : 400s x 138 (gain200, -20ºC) 2018, OSC camera : 600s x 42 Total exposure time : 22hr 20m Equipment : RainbwoAstro RST-135 FSQ106 OAG ASI120mm mini Location : s.Korea (traveler), bortle 5

Telescope : Takahashi FSQ-106ED (D:106mm, fl:530mm) CCD : SBIG STX-16803 Mount : RainbowAstro RST-135 Filters : Astrodon 50mm square LRGB OAG : Astrodon MOAG Guide CCD : ZWO ASI120mm mini Exposure : L 600s x 8(1x1bin), RGB each 600s x 4(1x1bin) total 3h 20m Location : RainbowAstro Remote Observatory @ NewMexico (Dark Sky NewMexico) Copyright Byoungjun Jeong

Telescope : WilliamOptics RedCat51 (D:51mm, FL:250mm) Camera : Canon 6D modified (by CentralDS) Mount : RainbowAstro RST-135 Tripod : Exosky Sirius EX-404C Guide system : ZWO guider, ASI120mm mini, ASIAIR Exposure : ISO1600 300s * 32 total 2h 40m Location : Mt. Lemmon Sky Center, Tucson, AZ, USA Copyright Byoungjun Jeong

Telescope : WilliamOptics RedCat51 (D:51mm, FL:250mm) Camera : Canon 6D modified (by CentralDS) Mount : RainbowAstro RST-135 Tripod : Exosky Sirius EX-364C Guide system : ZWO guider, ASI224MC, ASIAIR Exposure : ISO1600 300s * 30 total 2h 30m Location : Oukaimeden, Morocco Copyright Byoungjun Jeong

Telescope : Takahashi FSQ-106ED (D:106mm, fl:530mm) CCD : SBIG STX-16803 Mount : RainbowAstro RST-135 Filters : Astrodon 50mm square LRGB OAG : Astrodon MOAG Guide CCD : ZWO ASI120mm mini Exposure : L 600s x 13(1x1bin), RGB each 600s x 8(2x2bin) total 6h 10m Location : RainbowAstro Remote Observatory @ NewMexico (Dark Sky NewMexico) Copyright Byoungjun Jeong

Telescope : Takahashi FSQ-106ED (D:106mm, fl:530mm) CCD : SBIG STX-16803 Mount : RainbowAstro RST-135 Filters : Astrodon 50mm square LRGB, Ha 3nm OAG : Astrodon MOAG Guide CCD : ZWO ASI120mm mini Exposure : L 600s x 103(1x1bin), RGB each 600s x 42(2x2bin), Ha 1200s x 6(1x1bin) total 40h 10m Location : RainbowAstro Remote Observatory @ NewMexico