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Rear Hydrogen Alpha Filters

Rear Hydrogen Alpha Filters

 

Our range of rear mounted solar filters allow you to convert just about any telescope to safely observe and image the Sun. These filters require you to add some form of ERF (Energy Rejection Filter) to the telescope. They are available in a range of bandpass options from 0.8A to 0.3A


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Solar Spectrum Solar Observer Series 1.5 25mm 0.65A H-Alpha Filter

Premium 0.65A H-Alpha Filter for use with most telescopes. 25mm clear aperture. Active temperature control.

£3,259.00 *
Not in stock

Solar Spectrum Solar Observer Series 1.5 25mm 0.5A H-Alpha Filter

Premium 0.5A H-Alpha Filter for use with most telescopes. 25mm clear aperture. Active temperature control.

£3,649.00 *
Not in stock

Solar Spectrum Solar Observer Series 1.5 25mm 0.3A H-Alpha Filter

Premium 0.3A H-Alpha Filter for use with most telescopes. 25mm clear aperture. Active temperature control.

£5,569.00 *
Not in stock

Solar Spectrum Advanced Observer 32mm 0.65A H-Alpha Filter

Large Format 0.65A H-Alpha Filter for use with most telescopes. 32mm clear aperture. Active temperature control.

£4,469.00 *
Not in stock

Solar Spectrum Advanced Observer 32mm 0.50A H-Alpha Filter

Large Format 0.50A H-Alpha Filter for use with most telescopes. 32mm clear aperture. Active temperature control.

£5,819.00 *
Not in stock

Solar Spectrum Advanced Observer 32mm 0.30A H-Alpha Filter

Large Format 0.30A H-Alpha Filter for use with most telescopes. 32mm clear aperture. Active temperature control.

£7,809.00 *
Not in stock

Solar Spectrum Research Grade 32mm 0.65A H-Alpha Filter

Ultra Uniform 0.65A H-Alpha Filter for use with most telescopes. 32mm clear aperture. Active temperature control.

£5,819.00 *
Not in stock

Solar Spectrum Research Grade 32mm 0.50A H-Alpha Filter

Ultra Uniform 0.50A H-Alpha Filter for use with most telescopes. 32mm clear aperture. Active temperature control.

£6,949.00 *
Not in stock

Solar Spectrum Research Grade 32mm 0.30A H-Alpha Filter

Ultra Uniform 0.30A H-Alpha Filter for use with most telescopes. 32mm clear aperture. Active temperature control.

£10,019.00 *
Not in stock

Solar Spectrum Research Grade 46mm 0.70A H-Alpha Filter

Ultra Uniform 0.70A H-Alpha Filter for use with most telescopes. 46mm clear aperture. Active temperature control.

£8,649.00 *
Not in stock

Solar Spectrum Research Grade 46mm 0.50A H-Alpha Filter

Ultra Uniform 0.50A H-Alpha Filter for use with most telescopes. 46mm clear aperture. Active temperature control.

£9,719.00 *
Not in stock

Solar Spectrum Research Grade 46mm 0.30A H-Alpha Filter

Ultra Uniform 0.30A H-Alpha Filter for use with most telescopes. 46mm clear aperture. Active temperature control.

£13,529.00 *
Not in stock
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