Buy one, get one 25% off - Alpen Optics

Daystar  |  SKU: SS80P

DayStar Filters Solar Scout 80mm f/17.5 H-alpha Achro Solar Telescope (Prominence, OTA Only)

Earn 1 Point on this purchase. Learn more

This is a Special Order item. Typical shipping times do not apply. Item ships in approximately 6 weeks.

Shipping & Returns

We offer free US standard shipping on orders over $99 and 30-day returns on most items. Some limitations apply.

Shipping Policy

30-Day Return Policy

DayStar Filters Solar Scout 80mm f/17.5 H-alpha Achro Solar Telescope (Prominence)



  • 80mm Achromatic Doublet Refractor
  • 1400mm Focal Length, f/17.5 Focal Ratio
  • Prominence Quark H-alpha Solar Filter
  • ±0.5Å Wing Shift Tuning
  • Two-Element Telecentric 4.3x Barlow Lens
  • Optical Coatings Tuned to H-Alpha Band
  • Sturdy and Precise Helical Focuser
  • Bullet Solar Finder, Hard Case
  • OTA Only, Mount and Tripod Required


Study the rich details of the sun's prominence using Daystar Filters Solar Scout 80mm f/17.5 H-alpha Achro Solar Telescope. Optically, this is an achromatic doublet refractor which corrects spherical and chromatic aberrations to produce accurate color rendition without distortion across the entire field of view. Included with the optical tube assembly is the Quark solar filter system, specifically tuned for prominence viewing. Prominences, a detail of the chromosphere projected against the blackness of space behind the sun, are seen with improved contrast due to the filter's narrower bandpass versus a wider bandpass filter tuned for conventional chromosphere surface viewing.

The Quark is an all-in-one hydrogen-alpha filter engineered to eliminate unnecessary components, which reduces the size and weight and enables it to fit in a compact form factor that simply inserts into drawtubes and accepts 1.25" eyepieces. In addition to the tunable H-alpha filter, the Quark also functions as a 4.3x Barlow lens with a two-element lens system that is designed to be telecentric, which flattens the field of view and reduces parallax, and optical coatings that are optimized for the 656nm H-alpha wavelength. This design enables the use of nighttime telescopes for solar viewing, so it can be removed from the Scout OTA and inserted and used in many traditional telescopes.

The Solar Scout is offered here as an OTA-only option, so a mount and tripod are required for proper use. Daystar includes a Vixen-style dovetail plate to be compatible with many mounts, and a 1/4"-20 mount on the plate allows it to be directly attached to many photo, video, or field tripods. Also included is a solar finder for safe alignment for observation, and a hard carrying case to protect it when it's not being used.

Optical Tube

  • 80mm aperture
  • f/17.5 focal ratio
  • 1400mm focal length
  • Refractor-style optical configuration
  • Achromatic doublet lens design corrects spherical and chromatic aberration to produce accurate color fidelity without distortion across the entire field of view
  • Sturdy and precise helical focuser has no backlash and won't rotate eyepiece/imaging rig
  • Carbon fiber optical tube reduces weight without sacrificing strength, and resists the expansion/contraction caused by temperature fluctuations which can cause internal lenses to move out of alignment and affecting image quality and focusing ability

Prominence Quark

  • Hydrogen-alpha bandpass
  • Integrated 12mm blocking filter
  • 22mm clear filter aperture
  • Tuned to 0.5-0.3Å for viewing prominence details
  • Tuning knob allows for ±0.5Å wing shift for Doppler-shift compensation
  • Markers at every 0.1Å for reference and repeatability
  • LED indicators for power, warming, ready, and fault
  • Integrated 4.3x Barlow lens
  • Two-element telecentric lens design keeps light waves parallel to flatten the field of view and reduce parallax as magnification increases
  • Combination 2" & 1.25" snout — accepts 1.25" eyepieces and accessories
  • Can be moved to other OTAs

Power Requirements:

  • 5 VDC, 1.5A micro-USB port
  • 90-240 VAC wall adapter
  • Includes a set of international outlet plugs for US, UK, EU, and Australia


  • OTA only, mount and tripod required
  • Vixen-style dovetail plate is compatible with a wide variety of mounts
  • 1/4"-20 mounting socket allows the use of many photo/video/field tripods
  • Weight of 4.7 pounds



  • Allows for safe alignment with the sun
  • Does not require directly looking at the sun
  • Safely projects image of the sun on a small white screen for accurate alignment
  • Compact bullet design

Carrying Case:

  • Hard exterior protects for transport and storage
  • Foam-lined interior

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Meta Pay
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is processed securely encrypted during transmission. We do not store credit card details nor have access to your credit card information.

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question
DayStar Filters Solar Scout 80mm f/17.5 H-alpha Achro Solar Telescope (Prominence, OTA Only) | SS80P | 724696425915

DayStar Filters Solar Scout 80mm f/17.5 H-alpha Achro Solar Telescope (Prominence, OTA Only)





80 mm | 3.1"

Focal Length

1400 mm

Focal Ratio


Field of View




Barrel Size





View product