Budapest Telescope Centre

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Budapest Telescope Centre
btc@tavcso.hu +36-20-484-9300
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OPTOLONG H-alpha (7nm) CCD deepsky filter (EOS-clip)

incl. 27% VAT

209.35 €
Including 27% VAT:
209.35 € (80 600 HUF)
Net price (for non-EU customers):
164.84 € (63 465 HUF)
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Stock avalability
Delivery:
Available for delivery
Budapest shop:
Stock refill in progress
Delivery:Available for delivery
Bp. shop:Stock refill in progress
  • 2 year manufacturer warranty
  • 2 years consumer warranty

Product code: OpH7CCDeos

OPTOLONG H-alpha (7nm) CCD deepsky filter (EOS-clip)

These filters are intended for CCD applications.

Filter Specification:

  • H-Alpha: CW 656nm, 12 or 7nm bandwidth 
  • O-III: CW: 500nm, 12 or 7nm bandwidth 
  • S-II: CW: 672nm, 12 or 7nm bandwidth 

These filters are not suitable for solar observations!

Technical specifications

  • Supporting glass of Schott
  • Surface Quality 60/40 (corresponding to the EE kindness by American military standard MIL-O-13830)
  • Fine optically polished, 1/4 wavefront
  • min. 90% peak transmittance in the passband
  • IR Blocking 700-1100nm off band



Coating properties:

High Homogeneous multilayer anti-reflection coating
The allowances are not cemented to the optical carrier, but applied Deposition (IBAD) method by electron beam evaporation and subsequent ion beam assisted.
This special process allows a high durability and scratch resistance, and high stability of the center wavelength (CWL) and prevents a temperature drift.
High transmission in the passband, high optical density in the stop band.

Filter version:

  • Ultrathin filter mount for maximum passage: 26mm at the 1.25 "filters, 45mm at the 2" filters
  • Precise CNC manufacturing
  • Sandblasted
  • Black anodized
  • blackened to reflections
  • Laser engraving - no fading of the label

More about the product

Gallery (1)
2 year manufacturer warranty
2 years consumer warranty

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The product comes with 2 years warranty (excluding electric parts)

The product comes with 2 years consumer warranty.

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