Askar FRA400C Quintuplet Petzval Flat-Field Astrograph (FRA400C) Solar BBHS® provides a much broader

BBHS® provides a much broader spectral range with 98–99% reflection from just above 390 nm to 2000 nm

37 at the lowest resolution

1 kg counterweight for iOptron SmartEQTM and SmartEQ ProTM mounts

This is a camera with a small pixel size of 3

AST Core 4mm M54 Extension Tube

Askar FRA400C Quintuplet Petzval Flat-Field Astrograph (FRA400C) Solar BBHS® provides a much broaderThe 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,