Skip to content
  • ✨ FREE SHIPPING ON ORDERS OVER $60 ✨
  • ✨ FREE SHIPPING ON ORDERS OVER $60 ✨
SALELONGSKIRTGSALELONGSKIRTG
  • Orion
  • Celestron
  • Primalucelab
  • Ioptron
  • Chroma
  • Login
  • Cart / $93.00 1
      • × FLI AD-21 Adapter – FLI Proline to Nikon Lens SaleFLI AD-21 Adapter – FLI Proline to Nikon Lens Sale 1 × $93.00

      Subtotal: $93.00

      View cartCheckout

  • 1

    Cart

    • × FLI AD-21 Adapter – FLI Proline to Nikon Lens SaleFLI AD-21 Adapter – FLI Proline to Nikon Lens Sale 1 × $93.00

    Subtotal: $93.00

    View cartCheckout

“FLI AD-21 Adapter – FLI Proline to Nikon Lens Sale” has been added to your cart. View cart
Sale!
Home / Field Tested Systems

Gerd Neumann 10 L/mm Ronchi Eyepiece – 1.25″ on Sale

$59.00 Original price was: $59.00.$47.20Current price is: $47.20.

Browse
  • Astrozap
  • Ats
  • Avalon
  • Baader
  • Celestron
  • Chroma
  • Coronado
  • Dew Not
  • Explore Scientific
  • Field Tested Systems
  • Gerd Neumann
  • Hotech
  • Ioptron
  • Losmandy
  • Lunt Solar
  • Meade
  • Officina Stellare
  • Opt
  • Optec
  • Optolong
  • Orion
  • Pegasus Astro
  • Pentax
  • Planewave
  • Primalucelab
  • Qhy
  • Qsi
  • Revolution Imager
  • Sbig
  • Sharpstar / Askar
  • Sky Watcher
  • Software Bisque
  • Spectrum Telescopes
  • Starizona
  • Starlight Instruments
  • Starlight Xpress
  • Stellarvue
  • Takahashi
  • Uncategorized
  • Description
  • Reviews (0)

Gerd Neumann 10 L/mm Ronchi Eyepiece – 1.25″

The 10 mm Ronchi Eyepiece – 1.25″ by Gerd Neumann Jr:

 

This Gerd Neumann Jr. 10 mm Ronchi Eyepiece accessory will help you to check the quality of nearly any telescope you come across in the future! While it is true that optical aberrations can be determined by the star test, this method requires steady air and an experienced observer. The Ronchi test is far less demanding: It works within medium air and even beginners will be able to do a correct analysis of an instrument after a short period of learning!

The Ronchi eyepiece consists of a metal body with a 1.25″ shaft made of black anodized aluminum. It holds a tiny piece of glass with a grating on it. Some gratings from other manufacturers are made of exposed film or laser printouts: Those gratings will show inferior contrast and will be much more difficult to analyze! This Ronchi eyepiece is equipped with vacuum metalized chrome on glass grating with 10 lines per millimeter. The grating is on the telescope side of the glass and is exactly in the same plane as the outer stop. The Ronchi eyepiece is shipped in a protective case with a short manual in English and German.

OPT Product Number: GN-10-101-150

 

Reviews

There are no reviews yet.

Be the first to review “Gerd Neumann 10 L/mm Ronchi Eyepiece – 1.25″ on Sale” Cancel reply

Related products

Sale!
FLI 14 Position Dual Filter Wheel For Sale
+
Quick View

Field Tested Systems

FLI 14 Position Dual Filter Wheel For Sale

$3,975.00 Original price was: $3,975.00.$90.00Current price is: $90.00.
Sale!
Field Tested Systems RSpec Spectral Analysis Software For Discount
+
Quick View

Field Tested Systems

Field Tested Systems RSpec Spectral Analysis Software For Discount

$109.00 Original price was: $109.00.$87.00Current price is: $87.00.
Sale!
Gerd Neumann Aurora Flat Field Panels for <100mm Diameters – 12V Online
+
Quick View

Field Tested Systems

Gerd Neumann Aurora Flat Field Panels for <100mm Diameters – 12V Online

$99.00 Original price was: $99.00.$79.20Current price is: $79.20.
Sale!
FLI Kepler KL400 CMOS Front Illuminated Camera For Sale
+
This product has multiple variants. The options may be chosen on the product page Quick View

Field Tested Systems

FLI Kepler KL400 CMOS Front Illuminated Camera For Sale

$12,154.99 Original price was: $12,154.99.$92.00Current price is: $92.00.
Sale!
FLI Kepler Gsense4040 CMT Front Illuminated Grade 2 – 65mm Fashion
+
Quick View

Field Tested Systems

FLI Kepler Gsense4040 CMT Front Illuminated Grade 2 – 65mm Fashion

$18,895.00 Original price was: $18,895.00.$98.00Current price is: $98.00.
Sale!
Gerd Neumann Aurora Flat Field Panels for <315mm Diameters – 12V For Cheap
+
Quick View

Field Tested Systems

Gerd Neumann Aurora Flat Field Panels for <315mm Diameters – 12V For Cheap

$379.00 Original price was: $379.00.$97.00Current price is: $97.00.
Sale!
Gerd Neumann CTU-M48 Camera Tilting Unit Online Hot Sale
+
Quick View

Field Tested Systems

Gerd Neumann CTU-M48 Camera Tilting Unit Online Hot Sale

$199.00 Original price was: $199.00.$87.00Current price is: $87.00.
Sale!
Field Tested Systems Monochrome Spectroscopy Package Online Hot Sale
+
Quick View

Field Tested Systems

Field Tested Systems Monochrome Spectroscopy Package Online Hot Sale

$899.95 Original price was: $899.95.$88.00Current price is: $88.00.
Latest
  • Takahshi 1.25-Inch Eyepiece Adapter Online Sale Takahshi 1.25-Inch Eyepiece Adapter Online Sale $108.00 Original price was: $108.00.$98.00Current price is: $98.00.
  • Takahashi Wide Mount T-Ring for Nikon DX-WR Online Takahashi Wide Mount T-Ring for Nikon DX-WR Online $167.00 Original price was: $167.00.$87.00Current price is: $87.00.
  • Tele Vue 0.8X Reducer – TV102 Online Sale Tele Vue 0.8X Reducer – TV102 Online Sale $394.99 Original price was: $394.99.$99.00Current price is: $99.00.
  • Tele Vue 1 Micron Indicator Kit – 2″ Cheap Tele Vue 1 Micron Indicator Kit – 2″ Cheap $629.01 Original price was: $629.01.$95.00Current price is: $95.00.
Best Selling
  • Product Product
  • Dew-Not 4″ Scope Heater Strip Sale Dew-Not 4″ Scope Heater Strip Sale $38.55 Original price was: $38.55.$34.70Current price is: $34.70.
  • Coronado Solarmax III 70mm- BF10 Double Stack Online Hot Sale Coronado Solarmax III 70mm- BF10 Double Stack Online Hot Sale $3,699.99 Original price was: $3,699.99.$90.00Current price is: $90.00.
  • QSI 660wsg Mono CCD Camera – Mechanical Shutter, Integrated Guider Port & 5 Position Filter Wheel Cheap QSI 660wsg Mono CCD Camera – Mechanical Shutter, Integrated Guider Port & 5 Position Filter Wheel Cheap $6,248.00 Original price was: $6,248.00.$88.00Current price is: $88.00.
Featured
  • Product Product
  • OPTEC M117x1mm Mount to Optec 4300 Dovetail Online Hot Sale OPTEC M117x1mm Mount to Optec 4300 Dovetail Online Hot Sale $135.00 Original price was: $135.00.$91.00Current price is: $91.00.
  • Orion Scenix 10×50 Wide Angle Binocular For Discount Orion Scenix 10×50 Wide Angle Binocular For Discount $99.99 Original price was: $99.99.$80.00Current price is: $80.00.
  • Explore Scientific Adapter for FFFR507X-00 to 2.5-Inch Hex Focuser Supply Explore Scientific Adapter for FFFR507X-00 to 2.5-Inch Hex Focuser Supply $89.99 Original price was: $89.99.$72.00Current price is: $72.00.
Top Rated
  • Product Product
  • Dew-Not 4″ Scope Heater Strip Sale Dew-Not 4″ Scope Heater Strip Sale $38.55 Original price was: $38.55.$34.70Current price is: $34.70.
  • Coronado Solarmax III 70mm- BF10 Double Stack Online Hot Sale Coronado Solarmax III 70mm- BF10 Double Stack Online Hot Sale $3,699.99 Original price was: $3,699.99.$90.00Current price is: $90.00.
  • QSI 660wsg Mono CCD Camera – Mechanical Shutter, Integrated Guider Port & 5 Position Filter Wheel Cheap QSI 660wsg Mono CCD Camera – Mechanical Shutter, Integrated Guider Port & 5 Position Filter Wheel Cheap $6,248.00 Original price was: $6,248.00.$88.00Current price is: $88.00.
CONTACT US

Please feel free to contact us if you have any problem.

Open Time: 8:00AM - 6:00PM

Company Info
  • Contact Us
  • My account
  • Track your order
Service Center
  • Term & Conditions
  • Returns & Refunds
  • Shipping Info
  • Privacy Policy
SIGN UP AND SAVE

Subscribe to get special offers, free giveaways, and once-in-a-lifetime deals.

    bg_image
    • Contact Us
    • My account
    • Track your order
    Copyright 2025 © Salelonrtg
    • Orion
    • Celestron
    • Primalucelab
    • Ioptron
    • Chroma
    • Login

    Register

    Don't have an account? Register one!

    Register an Account

    Login

    Lost your password?