Antlia ALP-T Dual Narrowband Ha & OIII 5nm High Speed Filter - 36mm Unmounted
ALP-T Dual Band 5nm Highspeed Filters are further optimized to work with high-speed imaging systems by shifting slightly the passband and center wavelength. Using these highspeed filters between optics f/2.2 and f/3.6 shows much stronger and more contrasted in nebulae imaging compared to the standard version.
SvBony SV172 Dew Heater for Telescopes and Camera Lens, 400mm
Designed for astronomy telescopes and cameras, protecting optical devices like telescopes and cameras from fogging or freezing
Prevents dew condensation from forming on the glass surface
Provides even heat distribution. Power-efficient design will not result in an extra drain on your power supply.
Three-speed regulator strong-medium-weak heating modes, you can adjust the temperature in different situations
Width of the 50mm narrow width design, will not block your field of view and will not have dark corners in the field
Great heat preservation effect: Imitating OK cloth, SBR and Black-T three-layer keep warm material fits the lens better, fast and even heating
Alloy fiber heating wire provides super fast and continuous warming, silicone insulation process can prevent internal short circuit
Measure the circumference of the telescope tube or camera lens (or measure the tube diameter - not the scope aperture - ×3.14). Compatible with OD of telescopes/lenses below 127mm
Excellent Ha filter, installed it in a ZWO filter wheel and tried it on the evening just after receiving it and got great captures of the Dumbbell planetary nebula, very sharp and detailed. Thanks to Thaiexcite who shipped it quickly, so I was able to use it on that clear sky night!