Equipment

CaK solar imaging Herschel wedge for refractors · CNC-machined body with multi-coated optics · 35mm Herschel prism · Supplied with 1.25 inch CaK 393.3nm 3nm narrowband solar filter · Filter blocking OD5 (200-1200nm) and OD3 (1200-1500nm) · Polycrystalline ceramic diffuser heat trap with cooling vents · Maximum aperture 120mm or focal ratio f/5.5 or slower · Imaging only, not intended for visual use

Solar narrowband filter (Calcium K) · Passes the Ca II K line at 393.3nm · 3nm FWHM bandpass · OD5 blocking 200-1200nm, OD3 1200-1500nm · Multi-coated · 1.25-inch mounted (2-inch adapter available) · For high-resolution solar imaging of sunspots and granulation, not intended for visual use

Broadband light-pollution suppression (CLS) filter · Canon EOS clip-in, covers APS-C sensors · Blocks sodium and mercury vapour lines, most LED emission and airglow · Passes visible light and main nebula emission lines · Integrated IR-blocking layer · Wide passband for minimal star dimming · Fits inside the camera body, retaining autofocus and metering · Parfocal, planoptically polished glass

Narrowband H-alpha emission-line filter · 6nm FWHM bandpass · Transmission above 90% at 656nm · Canon EOS clip-in, covers APS-C sensors · Suppresses mercury and sodium lighting and skyglow · Parfocal with other Astronomik filters · Fits inside the camera body, retaining autofocus and metering · Planoptically polished glass

APS-C CMOS sensor · Colour · 12.2MP (4272 x 2848) · Pixel size 5.2um · APS-C (22.2 x 14.8mm, 1.6x crop) · 14-bit RAW · ISO 100-6400 (expandable to 12800) · DIGIC 4 processor · USB 2.0 · Often astro-modified by removing the internal IR-cut filter for Ha sensitivity

Powered eyepiece-style solar filter with Fabry-Perot etalon · Magnesium I b2 line at 517.3nm (5172.8A) · Sub-Angstrom bandpass, under 0.5nm (about 0.4A) FWHM · Built-in 4.2x telecentric Barlow · 1.25-inch snout (2-inch optional) · USB-powered 5V · For refractors f/4 to f/9 · Requires a front-aperture energy-rejection filter

Powered eyepiece-style solar filter with Fabry-Perot etalon · Sodium Na D line at 589.6nm (5895.9A) · Sub-Angstrom bandpass, about 0.3 to 0.5A · Plus or minus 0.5A wing-shift tuning · Built-in two-element 4.2x telecentric Barlow, fully baffled · 12mm blocking filter · 1.25-inch snout · USB-powered 5V 1.5A · For refractors f/4 to f/9 · Requires a front-aperture energy-rejection filter

LED flat-field calibration panel for flat frames · Adjustable brightness across 1-4096 steps · Anti-dew heater with three modes (off, on, on when open or LED active) · 12V DC powered · USB control · ASCOM driver and imaging-software automation support

Utah Desert Remote Observatory, Utah USA (U94) · Planewave 20-inch CDK astrograph · Aperture 510mm · Focal length 2280mm (0.66x reducer) · f/4.5 · Camera FLI ProLine PL11002M CCD, 10.7MP (4008 x 2672), 9um · 0.81 arcsec/px · FOV 54.3 x 36.2 arcmin · Mount Planewave Ascension 200HR

Utah Desert Remote Observatory, Utah USA (U94) · Takahashi FSQ-106 Fluorite Petzval astrograph · Aperture 106mm · Focal length 530mm · f/5 · Camera SBIG STX-16803 CCD, 4096 x 4096, 9um · 3.5 arcsec/px · FOV 239 x 239 arcmin · Mount Paramount ME

Siding Spring Observatory, Australia (Q62) · Planewave 17-inch CDK astrograph · Aperture 432mm · Focal length 2939mm · f/6.8 · Camera ZWO ASI6200MM Pro mono CMOS (Sony IMX455 full-frame) · 0.53 arcsec/px (Bin2) · FOV 42.4 x 28.3 arcmin · Mount Paramount PME

AstroCamp, Nerpio, Spain (I89) · Planewave 12.5-inch CDK astrograph · Aperture 318mm · Focal length 1683mm (reduced) · f/5.3 · Camera QHY600M-PH mono CMOS (Sony IMX455 full-frame BSI) · 0.92 arcsec/px (Bin2) · FOV 73.6 x 49.1 arcmin · Mount Paramount PME

Utah Desert Remote Observatory, Utah USA (U94) · Takahashi TOA-150 apochromatic refractor · Aperture 150mm · Focal length 1105mm · f/7.3 · Camera QHY168C colour CMOS, 16MP (4952 x 3288), 3.76um · 0.71 arcsec/px · FOV 1.21 x 0.81 deg · Mount Paramount GTS

Utah Desert Remote Observatory, Utah USA (U94) · Takahashi FSQ-106ED Petzval apo astrograph · Aperture 106mm · Focal length 530mm · f/5 · Camera ZWO ASI2400C colour CMOS (Sony IMX410 full-frame, 6072 x 4042, 5.94um) · 2.32 arcsec/px · FOV 234 x 156 arcmin · Mount Paramount ME

Utah Desert Remote Observatory, Utah USA (U94) · Planewave 17-inch CDK astrograph · Aperture 431mm · Focal length 1940mm (0.66x reducer) · f/4.5 · Camera FLI PL6303E CCD, 6.3MP (3072 x 2048) · 0.96 arcsec/px · FOV 49.2 x 32.8 arcmin · Mount Planewave Ascension 200HR

Sierra Remote Observatory, California USA (U69) · Planewave 24-inch CDK astrograph · Aperture 610mm · Focal length 3962mm · f/6.5 · Camera FLI PL09000 CCD, 9.3MP (3056 x 3056), 12um · 0.62 arcsec/px · FOV 31.8 x 31.8 arcmin · Mount Planewave Ascension 200HR

Utah Desert Remote Observatory, Utah USA (U94) · Planewave CDK20 astrograph · Aperture 508mm · Focal length 3454mm · f/6.8 · Camera Player One Zeus 455 PRO CMOS (Sony IMX455, 62MP) · 0.45 arcsec/px (Bin2) · FOV 36.2 x 24.2 arcmin · Mount Planewave L-500

Utah Desert Remote Observatory, Utah USA (U94) · Planewave Delta Rho 500 corrected-Cassegrain astrograph · Aperture 508mm · f/3 native, run with 0.45x reducer · Camera ZWO ASI6200MM Pro mono CMOS (Sony IMX455 full-frame, 62MP, 3.76um) · 1.0 arcsec/px (Bin2) · FOV 1.34 x 0.9 deg · Mount Planewave L-550 on wedge

Siding Spring Observatory, Australia · Planewave 20-inch (0.51m) CDK · Corrected Dall-Kirkham astrograph · Aperture 508mm · Focal length 2262mm (with 0.66 focal reducer) · f/4.4 · Camera FLI ProLine PL6303E CCD · Resolution 3072 x 2048px · 0.81 arcsec/px · FOV 41.6 x 27.8 arcmin · Mount Planewave Ascension 200HR

Siding Spring Observatory, Australia · Planewave 17-inch CDK · Corrected Dall-Kirkham astrograph · Aperture 431mm · Focal length 2912mm · f/6.8 · Camera ZWO ASI6200MM Pro (Sony IMX455 CMOS) · Resolution 9576 x 6388px · 0.531 arcsec/px (bin 2) · FOV 42.4 x 28.3 arcmin · Mount Planewave Ascension 200HR

Siding Spring Observatory, Australia · Star Instruments 12.5-inch RCOS · Ritchey-Chretien, carbon-fibre tube · Aperture 320mm · Focal length 2885mm · f/9 · Camera Apogee Alta U16 (KAF-16803 CCD) · Resolution 4096 x 4096px · 0.66 arcsec/px · FOV 37 x 37 arcmin · Mount Paramount ME

Utah Desert Remote Observatory, Utah USA (U94) · Takahashi Epsilon 250 hyperbolic astrograph · Aperture 250mm · Focal length 850mm · f/3.4 · Camera SBIG ST-10XME CCD, 3.2MP (2184 x 1472) · 1.65 arcsec/px · FOV 60.6 x 40.8 arcmin · Mount Paramount ME

Siding Spring Observatory, Australia · Planewave 20-inch CDK · Corrected Dall-Kirkham astrograph · Aperture 510mm · Focal length 3411mm · f/6.8 · Camera FLI ProLine 16803 (KAF-16803 CCD) · Resolution 4096 x 4096px · 0.54 arcsec/px · FOV 37.2 x 37.2 arcmin · Mount Planewave Ascension 200HR

Utah Desert Remote Observatory, Beryl Junction, Utah, USA · Celestron RASA 11, Rowe-Ackermann Schmidt Astrograph · Aperture 279mm · Focal length 620mm · f/2.2 · Camera ZWO ASI071MC Pro (Sony CMOS) · Resolution 4944 x 3284px · 1.6 arcsec/px · FOV 2.2 x 1.46 deg · Mount Paramount ME II

Deep Sky Chile, Rio Hurtado Valley, Chile · Samyang 135mm camera-lens astrograph · Focal length 135mm · f/3.5 · Camera ZWO ASI2600MM (Sony IMX571 CMOS) · Resolution 6248 x 4176px · 5.74 arcsec/px · FOV 9.97 x 6.66 deg · Mount Paramount ME

Deep Sky Chile, Rio Hurtado Valley, Chile · Takahashi Epsilon 180ED, hyperbolic corrected Newtonian astrograph · Aperture 180mm · Focal length 500mm · f/2.8 · Camera ZWO ASI2600MM Pro (Sony IMX571 CMOS) · Resolution 6248 x 4176px · 1.55 arcsec/px · FOV 2.69 x 1.8 deg · Mount Paramount MyT

Deep Sky Chile, Rio Hurtado Valley, Chile · Planewave CDK20, Corrected Dall-Kirkham astrograph · Aperture 510mm · Focal length 3411mm · f/6.8 · Camera FLI ML16200 (KAF-16200 CCD) · Resolution 4500 x 3600px · 0.359 arcsec/px · FOV 26.9 x 21.5 arcmin · Mount Planewave L-500

Deep Sky Chile, Rio Hurtado Valley, Chile · Planewave CDK14, Corrected Dall-Kirkham astrograph · Aperture 356mm · Focal length 2563mm · f/7.2 · Camera ZWO ASI2600MM (Sony IMX571 CMOS) · Resolution 6248 x 4176px · 0.30 arcsec/px · FOV 31.5 x 21 arcmin · Mount Paramount ME II

Deep Sky Chile, Rio Hurtado Valley, Chile · ASA N250 Newtonian astrograph · Aperture 250mm · Focal length 893mm · f/3.8 · Camera ZWO ASI6200MM (Sony IMX455 CMOS) · Resolution 4788 x 3194px (bin 2) · 1.72 arcsec/px · FOV 2.29 x 1.53 deg · Mount Paramount MyT

Siding Spring Observatory, Australia (Q62) · Takahashi FSQ-ED Petzval apo astrograph · Aperture 106mm · Focal length 530mm · f/5 · Camera FLI Microline 16803 CCD, 4096 x 4096 (KAF-16803) · 3.5 arcsec/px · FOV 239 x 239 arcmin · Mount Paramount PME

E-Eye, Fregenal de la Sierra, Spain · Samyang 135mm camera-lens astrograph · Focal length 135mm · f/2.8 · Camera ZWO ASI2600MM (Sony IMX571 CMOS) · Resolution 6248 x 4176px · 5.74 arcsec/px · FOV 9.97 x 6.66 deg · Mount Paramount MyT

Seven-filter set for a monochrome camera (ASI1600MM class) · Broadband L, R, G, B imaging filters plus Ha, OIII and SII narrowband filters · Ha 656nm, OIII 500nm, SII 672nm · Narrowband 7nm FWHM · 36mm unmounted format for a filter wheel · Anti-reflection coated, quarter-wave optical precision

Quad-band light-pollution suppression filter for colour and one-shot-colour cameras · Passes the Hb, OIII, Ha and SII emission bands · Over 90% transmission at the target nebula lines · Near-IR cut-off at 1000nm · OD2 to OD4 suppression of light-pollution wavelengths (mercury and sodium lamps) · 2-inch mounted (M48) · Durable ion-assisted coatings · Suited to broadband targets from Bortle 1 to 7

Dual-band narrowband filter · Ha 656.3nm + OIII 500.7nm · 3nm FWHM each band · Blocking 300-1000nm, greater than OD4 · 1.85mm optical glass, 60/40 surface quality, lambda/4 transmitted wavefront · 2-inch mounted (also 1.25-inch) · For OSC, DSLR, CMOS and CCD cameras · Optimised for fast optics with low halo

166Wh / 45000mAh ternary lithium power station · AC output 230V, 180W pure sine wave · DC output 9-12V, 10A maximum · USB 5V/2A plus QC3.0 fast-charge USB · Recharge via mains (approximately 4 hours), solar or car socket · LCD status display and built-in LED light · Weight approximately 2kg · Dimensions approximately 195 x 90 x 90mm

Motorised camera field rotator · 87.2 steps per degree (31,392 steps per revolution) · Payload up to 6kg · Female M68 threads on telescope and camera sides · Back focus 15.2mm · USB 2.0 connectivity · Power 12V / 1A · ASCOM, INDI and standalone software support · Weight approximately 700g

Geared stepper focus motor · Step angle 7.5 degrees with 120:1 gearbox (0.06255 degrees per step) · Load capacity up to 6kg at zenith · Minimised backlash · External digital temperature sensor input with supplied probe · USB connectivity · ASCOM, INDI and Unity driver support · Universal L-bracket fits most focusers

Input 12-14V DC, reverse-polarity protected (XT60) · 4 x switchable 12V DC outputs (6.5A each, per-port current sensing), 1 always-on 12V (8A), 1 adjustable 3-12V (3A) · 6-port USB 3.1 hub (individually switchable) · 3 x PWM dew heater channels (6.5A each) · Environmental sensors: temperature, humidity, dew point · Integrated stepper focuser controller with backlash compensation · Power monitoring with per-port metering · ASCOM 6 and INDI/INDIGO · 135 x 107 x 30mm · 400g

1.25 inch star diagonal, 90 degrees · Dielectric multi-coated mirror, approximately 99% reflectivity · Aluminium alloy housing with stainless steel cover plate · 1.25 inch filter thread · Weight approximately 136g · For refractors, not recommended for reflectors

Lithium power bank · 86.58Wh (23400mAh at 3.7V) · Regulated 12V/5A DC barrel output · 12V/10A cigarette-lighter socket (up to 120W) · 30W USB-C Power Delivery output · 18W USB-A QC 3.0 output · LED charge indicator · 62.5 x 62.5 x 130mm · 630g

Full-aperture white-light solar filter · ND5 reflective-coated Helios solar glass in an aluminium cell · Blocks 99.999% of sunlight · Front-mounted, sized to fit the Sky-Watcher Esprit 120ED objective · Shows the photosphere, sunspots and surface granulation · White-light, no emission line isolated

Full-aperture white-light solar filter · ND5 reflective-coated Helios solar glass in an aluminium cell · Blocks 99.999% of sunlight · Front-mounted, sized to fit the William Optics ZenithStar 71 objective · Shows the photosphere, sunspots and surface granulation · White-light, no emission line isolated

Belt-driven German equatorial · Payload 20kg (44lb) · Permanent Periodic Error Correction (PPEC) · SynScan Go-To hand controller, 42,000+ object database · ASCOM via SynScan/EQMOD · ST-4 autoguider port · Head weight approx 17kg · Latitude range 10-65 degrees · 12V DC · Counterweights 2 x 5kg included

Aperture 120mm · Focal length 840mm · f/7 · Air-spaced triplet super-apo (ED FPL-53 glass) · Metallic High-Transmission Coatings · 3-inch dual-speed Helinear rack-and-pinion focuser (1:11 reduction) · Retractable dew shield · Supplied 1.0x field flattener corrected for full-frame sensors · 2-inch and 1.25-inch adaptors · OTA approx 9kg

Aperture 50mm · Focal length 242mm · f/4.8 · ED doublet (Ohara S-FPL53 glass) · 1.25-inch non-rotating helical focuser · Focuser travel 18mm · T2 thread and 1.25-inch socket for camera or eyepiece · Supplied 45mm Vixen-style dovetail bar and finder-shoe bracket · 1/4-20 tripod thread · Weight approx 865g · Optional field flattener available

Compact Go-To German equatorial · Payload 5kg (11lb) · Built-in WiFi, SynScan Pro app (iOS/Android) · Hand controller and USB · ST-4 autoguider port · Head weight 2.6kg · Latitude range 0-70 degrees · Built-in polar scope with illuminator · Powered by 8x AA or 12V DC

White-light solar Herschel wedge, refractors only (never reflectors, SCTs or Maks) · 2-inch fitting with 2-inch to 1.25-inch adapter, twist-lock ring · Anti-reflection coated prism, 90-degree viewing angle · Built-in ND3.0 plus 2-inch polarising filter for continuous brightness adjustment · Ceramic diffuser heat trap venting rejected light out the rear · Rated for refractors up to 150mm · 46mm clear aperture · 115mm optical back length

SVBony SV241 astronomy DC and USB power distribution hub (no internal battery) · 12V DC input via 5.5 x 2.1mm barrel, 10A maximum · 6 x 12V DC outputs (5.5 x 2.1mm) · 2 x USB 3.1 ports · 1 x USB 2.0 and 1 x USB Type-C · USB rail 5V 8A shared · Reverse-polarity and ESD protection · 1/4-20 and M4 mounting threads · 96 x 61 x 25mm · 125g

Zoom eyepiece 7-21mm · Apparent field of view 40-57 degrees (widens toward 7mm) · 1.25-inch barrel · Eye relief 16.3-18mm · 6 elements in 4 groups · Fully multi-coated · 1.25-inch filter thread (M28.5x0.6) · Weight 133g

Aperture 30mm · Focal length 120mm · f/4 · Fully multi-coated mini guide scope · Tube travel 45mm helical adjustment · Back focus 26mm · 1.25-inch and M42 camera interfaces · Two-ring bracket with dovetail included · Weight 342g · Dimensions 92 x 56 x 78mm · 1/4-20 mounting thread

Zoom eyepiece 7.2-21.6mm · Apparent field of view 42-65 degrees · 1.25-inch barrel · Eye relief 10-18mm · 7 elements in 4 groups · Fully multi-coated with blackened lens edges · Field stop 16mm · 1.25-inch filter thread (M28.5x0.6) · Twist-up metal eyecup · Weight 167g

Filter drawer, M54x0.75 male to M48x0.75 female (M54-M48 adapter supplied) · Holds 2-inch / M48 / 36mm mounted filters · Optical length 20mm · Sliding drawer with dual-magnet filter holder and locking anti-light-leak screw · CNC one-piece aluminium · Weight 115g

UV-IR cut filter · Passes the visible spectrum and blocks ultraviolet and infrared · Over 94% transmission across the visible band · Multi-coated · 1.25-inch mounted, M28.5x0.6 thread · Keeps planetary and deep-sky images sharp on refractors and CMOS cameras

Aperture 51mm · Focal length 250mm · f/4.9 · Four-element Petzval apo (FPL-53 glass) · WIFD internal-focus design (EAF compatible) · 45mm full-frame image circle · Built-in rotator and Bahtinov mask cap · Tube rings, dovetail and saddle included · OTA weight approx 1.77kg

Aperture 71mm · Focal length 350mm · f/4.9 · Four-element Petzval apo (FPL-53 glass) · WIFD internal-focus design (EAF compatible) · 44mm full-frame image circle · Built-in rotator and Bahtinov mask cap · Tube rings, dovetail and saddle included · OTA weight approx 3.2kg

Aperture 71mm · Focal length 418mm · f/5.9 · Air-spaced ED doublet (Ohara FPL-53 glass) · STM multi-coatings · 2-inch dual-speed rack-and-pinion focuser · Retractable dew shield · Tube length 310mm retracted, 355mm extended · Weight approx 2.7kg · Matched Flat6A II field flattener and 0.8x reducer available

Harmonic strain-wave equatorial (EQ/Alt-Az) · Payload 13kg (no counterweight), 20kg with counterweight · Periodic error +/-10 arcsec · WiFi, Bluetooth and USB-C, ASCOM · Hand controller / ASIAIR / app control · Head weight 5kg · No counterweight required · 12V DC input with 12V and USB-C outputs on saddle

Panasonic MN34230 sensor · Mono · 16MP (4656 x 3520) · Pixel size 3.8um · 4/3in (21.9mm diagonal) · Cooling -40C below ambient · Read noise 1.2-3.6e · Full well 20ke · 12-bit ADC · USB 3.0 · Back focus 6.5mm

Sony IMX571 sensor · Colour · 26MP (6248 x 4176) · Pixel size 3.76um · APS-C (28.3mm diagonal) · Cooling -35C below ambient · Read noise 1.0-3.3e · Full well 50ke · 16-bit ADC · USB 3.0 · Back focus 17.5mm

Sony IMX290 sensor · Mono · 2.1MP (1936 x 1096) · Pixel size 2.9um · 1/2.8in (6.46mm diagonal) · Uncooled · Read noise 1.0-3.7e · Full well 14.5ke · 12-bit ADC · QE peak over 80% · USB 2.0 · Popular guide camera

Sony IMX462 sensor · Colour · 2.1MP (1936 x 1096) · Pixel size 2.9um · 1/2.8in (6.46mm diagonal) · Uncooled · Read noise 0.47-3.1e · Full well 12ke · 12-bit ADC · High near-infrared sensitivity (800-1000nm) · USB 3.0 · Back focus 8.5mm

Stepper motor, 5760 steps per revolution (7.5-degree step, 1:128 reduction) · Load capacity 5kg · 5V USB powered · Adjustable backlash compensation · External temperature sensor for temperature compensation · USB 2.0 · ASCOM, INDI and native ASIAIR support · Optional hand controller · Weight approx 277g

Aperture 50mm · Focal length 250mm · f/5 · Apo triplet with ED element · Sony IMX462 colour CMOS sensor (1920 x 1080, 2.1MP) · Alt-az mount with EQ mode · Built-in electronic focuser · Three internal filters (UV/IR cut, dark, dual-band OIII 30nm / Ha 20nm) · Integrated dew heater · WiFi and Bluetooth control · 5Ah battery, 3.5 to 5 hours · Weight approx 2.5kg

Sony IMX462 sensor · Colour · 2MP (1920 x 1080) · Pixel size 2.9um · 1/2.8in (6.46mm diagonal) · 12-bit · High near-infrared sensitivity · Internal camera of the Seestar S50 smart telescope