Eclipsmart Solar Filter - AstroMaster 70 Eyepiece Kit 4G has a longer transmission

4G has a longer transmission distance but slightly slower speed compared to 5G

this can be used with optional third-party telescope control software by use of an ASCOM driver

The essential package includes the Hestia unit and bonus solar observation kit

Celestron’s Optical Design

First of all

Eclipsmart Solar Filter - AstroMaster 70 Eyepiece Kit 4G has a longer transmissionISO CERTIFIED SOLAR TELESCOPE FILTER: Certified to comply with the ISO 12312 2 international safety standard for filters for direct viewing of the Sun. WORKS WITH YOUR EXISTING TELESCOPE: Compatible with Celestron AstroMaster 70AZ EQ and AstroMaster LT 70AZ telescopes. SAFE, SNUG FIT: Three safety screws keep your filter securely attached to your telescopes objective. A safety cap protects the outer surface of the filter when not in use. SOLAR FILM