Askar FRA400C Quintuplet Petzval Flat-Field Astrograph (FRA400C)

Askar FRA400C Quintuplet Petzval Flat-Field Astrograph (FRA400C)The refreshed, budget friendly iteration of FRA400, is suitable for astrophotography, daily photography, and visual observation. Key FRA400C Features Quintuplet ED Refractor: The FRA400C features a 72mm aperture, 400mm focal length, and a focal ratio of 5. 6. It adopts a quintuplet lens design with two ED glasses, supporting a 44mm full frame image circle. Self Flattened Design: The optical structure of FR4A400C is the same as that of the FRA400,

Signal-to-noise ratio (SNR)

Askar ColourMagic Specially launches the SII+OIII 2" 6nm duo-narrowband filter

which is even quicker compared to ASI2600MC Pro

USB interface for XChange 2 PC software Memory Yes Depth Indication

USB-C/Thunderbolt adds many additional features:

05 OPTICAL LENGTH (MM) 20 CLAMPING SYSTEM Screw clamps T-2 PART # 8c INNER DIAMETER / CLEAR APERTURE 1

2“ BARREL (MM) 21 mm SLIP PROTECT SAFETY Safety Kerfs EYEPIECE BODY ABOVE REFERENCE PLANE (MM) 102 mm LENGTH OF 1¼" BARREL (MM) 24 mm LENGTH OF 2" BARREL (MM) 21 mm OUTER DIAMETER 55 mm CONNECTIONS OUTER CONNECTION (EYEPIECE/-CAMERA-SIDED) Thread

Calculated lens system - designed for an unvignetted field down to f3

you can use it just about anywhere

90 day limited for battery

Also allows use of existing EdgeHD T-Adapters and other Celestron imaging accessories

sparrows to sandpipers