Steplessly variable diaphragm 13 - 113 mm

Codice articolo: BP2459300

The continuously adjustable Iris Diaphragm is used for optimizing the telescope aperture when observing with an H-alpha filter from SolarSpectrum.

♦ aperture from 15 to 113 mm

♦ continuously adjustable

♦ outside white, innside black

♦ circular aperture with 20 blades

♦ mounted in front of a D-ERF filter

♦ four female M3 threads for mounting on a self-made cell

♦ The depicted adapter (unsharp) under the iris diaphragm is not included and cannot be ordered.

This iris diaphragm optimizes the aperture when using the H-alpha filters from SolarSpectrum and is placed in front of the D-ERF filter.

It is also suitable for other brands and even usable for masking rim errors of cheap lenses.

For attaching to self-constructed cells, there are four female M3 threads on a circle with 60 mm radius.

Animation of the continuous adjustment:

The depicted adapter under the iris diaphragm is shown for demonstration purposes only and therefore not included. It also cannot be made by Baader or TS.

Please note: To use the iris diaphragm on our Frame for D-ERF Filters 75-180mm (various versions available) (Our filter holders are available ONLY IN ADDITION to a Solar Spectrum H-alpha filter), you also need

Detachable sun diaphragm holder for D-ERF 70/90/110 filter-frames (#2459247 )
or
Detachable sun diaphragm holder for D-ERF 135 - 160 filter-frames (#2459247A )