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Ritchey–Chrétien imaging in a tennis court
2026-04-20
- Classification
- Photograph
- Museum
- Wikimedia Commons
- Rights
- CC BY 4.0, as the museum states it.
- Who can see it
- Tweens profiles and older: its subjects are known and suit older children. How works are placed
About this work
This is my home base for narrowband and infrared imaging. You can see me going wild with the glow-in-the dark tape on the OTA, focuser, and pier extension, to help with visibility in dark sky sites. The Milky Way can be faintly seen in Sagittarius, along with the head of Scorpius to the west.
Setup
OTA: Apertura CarbonStar RC8 (203 mm f/8 Ritchey–Chrétien)
Mount: Sky-Watcher Wave 150i (strain wave German equatorial mount)
Camera: Touptek ATR533M (Sony IMX533 monochrome CMOS sensor) with tilt plate
Filter wheel: Touptek AFW-M (8-position wheel supporting 1.25" and 36 mm filters)
Filters: Touptek 1.25" LRGB, Touptek 6.5 nm SHO, SVBONY SV183 685 nm IR pass
Off-axis guider: SVBONY SV238 OAG
Guide camera: Player One Xena-M (IMX178 version)
Focuser: Apertura rack and pinion Cassegrain focuser with Gemini electronic autofocuser
