Currency: EUR

ERF 1.25″

Temporarily out of stock

Player One Astronomy

Player One - ERF 1.25″ Filter S-series for Quark Chromosphere

72,00 €
In stock

Product description

Player One S series filter using high quality optical glass substrate and multi-layer composite coating technology, which has excellent optical performance in astrophotography.

1.25inch ERF filter ( Energy rejection filter for Quark Chromosphere)

This filter is an assistant filter, design for Quark Chromosphere (Ha verstion) , intend to reject energy and extend life time of your Quark.

1.25″ ERF filter must working on 5″ or smaller refractors.

(DO NOT use it on eyespiece for observing)

Why add a ERF on Quark?

First filter on Quark is quite small, the solar disk might bigger than it, the light will heat the filter and it’s holder. With this 1.25″ ERF filter, we can protect both the filter and filter holder from high temperature.

And don’t worry about the ERF itself, it’s use B270 transparent glass and multi coating, it will reflect not absort most energy.

Does it has any other usage?

Yes, this ERF filter also can be used in Lunar imaging, it will provide even brighter image than IR685 filter, also could improving the seeing.

Product details

Specifications: 1.25 inch, thread M28.5*0.6

Frame thickness: body 5mm+ thread 2mm, a total of 7mm

Thickness of filter lens: 2mm

PV: 1/4 lambda

Transmittance: ≈99%

Blocking depth: OD2 (300nm-1100nm)

Shipping costs

15,90 €
European delivery 2-5 days.
PostNord Parcel locker
5,90 €
PostNord Home deliver
19,00 €
Environmentally friendly delivery to your door at the agreed time. Trackable deliveries in real time even in the evenings in the biggest cities. Change your delivery as required.
UPS Standard
14,90 €
Delivery to Europe in 2 to 5 days.
5,90 €
12,90 €















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