Skip to content
  • ✨ FREE SHIPPING ON ORDERS OVER $60 ✨
  • ✨ FREE SHIPPING ON ORDERS OVER $60 ✨
SALELONGSKIRTGSALELONGSKIRTG
  • Orion
  • Celestron
  • Primalucelab
  • Ioptron
  • Chroma
  • Login
  • Cart / $141.00 2
      • × Starizona Modular Filter Slider – M48 Male – M48 Female Online Hot SaleStarizona Modular Filter Slider – M48 Male – M48 Female Online Hot Sale 1 × $93.00
      • × Celestron Vibration Suppression Pads DiscountCelestron Vibration Suppression Pads Discount 1 × $48.00

      Subtotal: $141.00

      View cartCheckout

  • 2

    Cart

    • × Starizona Modular Filter Slider – M48 Male – M48 Female Online Hot SaleStarizona Modular Filter Slider – M48 Male – M48 Female Online Hot Sale 1 × $93.00
    • × Celestron Vibration Suppression Pads DiscountCelestron Vibration Suppression Pads Discount 1 × $48.00

    Subtotal: $141.00

    View cartCheckout

“Celestron Vibration Suppression Pads Discount” has been added to your cart. View cart
Sale!
Home / Celestron

Celestron M42 Spacer Ring Kit Online Sale

$45.95 Original price was: $45.95.$41.40Current price is: $41.40.

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
Recently Viewed
  • Starizona Modular Filter Slider – M48 Male – M42 Female Discount Starizona Modular Filter Slider – M48 Male – M42 Female Discount $149.00 Original price was: $149.00.$85.00Current price is: $85.00.
  • Description
  • Reviews (0)

Celestron M42 Spacer Ring Kit

Celestron’s M42 Spacer Ring kit includes three different length spacer rings to achieve the proper back-focus distance with our popular Celestron optical tubes and T-thread camera adapters. To achieve the best astroimages, it is important to attain the proper back-focus distance for your camera relative to the telescope it is being used with. If the back-focus distance your camera consumes is not exact, the performance at the corners of full-frame imaging sensors will suffer—stars will appear elongated and not as pinpoints.

How to Use

Depending on your method of astrophotography (DSLR or CCD/CMOS), there are two ways to use the M42 Spacer Ring. If you are using a DSLR, place the desired M42 Spacer Ring between your T-Ring and your T-Adapter for your optical tube. If you are using a CCD or CMOS camera, place the desired M42 Spacer Ring between the camera and the T-Adapter for your optical tube.

 Spacer Ring Size Works best with:
7.5mm Provides proper spacing with RASA 8 for many ZWO cameras

12mm

Provides proper spacing with RASA 8 for many Atik cameras
30mm Converts ZWO camera w/filter slider to 55mm back-focus standard for use with Schmidt-Cassegrain & EdgeHD

Material

The M42 Spacer Rings are machined aluminum black anodized. The internal surfaces are blackened and glare-threaded to provide the highest contrast. Each spacer ring has a knurled surface, providing a great gripping surface for threading/unthreading. The M42 Spacer Rings are compatible with M42 x 0.75 (T-thread) camera adapters.

  • Adjusts back-focus between your camera and telescope for the best astroimaging results
  • Kit includes 3 spacer rings of different lengths (7.5mm, 12mm, 30mm)
  • Threads to your T-Ring and T-Adapter with standard male and female T-threads

Reviews

There are no reviews yet.

Be the first to review “Celestron M42 Spacer Ring Kit Online Sale” Cancel reply

Related products

Sale!
Celestron Ultima 8x42mm Porro Binocular Hot on Sale
+
Quick View

Celestron

Celestron Ultima 8x42mm Porro Binocular Hot on Sale

$118.95 Original price was: $118.95.$98.00Current price is: $98.00.
Sale!
Celestron X-Cel LX 2X Barlow – 1.25″ Online
+
Quick View

Celestron

Celestron X-Cel LX 2X Barlow – 1.25″ Online

$101.95 Original price was: $101.95.$98.00Current price is: $98.00.
Sale!
Chroma 1.25″ LRGB Filter Set Online
+
Quick View

Celestron

Chroma 1.25″ LRGB Filter Set Online

$525.00 Original price was: $525.00.$98.00Current price is: $98.00.
Sale!
Celestron UpClose G2 16 X 32 Binoculars – Roof Cheap
+
Quick View

Celestron

Celestron UpClose G2 16 X 32 Binoculars – Roof Cheap

$36.95 Original price was: $36.95.$33.30Current price is: $33.30.
Sale!
Celestron Universal Mounting Plate – CGE Supply
+
Quick View

Celestron

Celestron Universal Mounting Plate – CGE Supply

$81.95 Original price was: $81.95.$65.60Current price is: $65.60.
Sale!
Celestron Visual Back for SCT & Refractors For Discount
+
Quick View

Celestron

Celestron Visual Back for SCT & Refractors For Discount

$44.95 Original price was: $44.95.$40.50Current price is: $40.50.
Sale!
Celestron Universal T-Adapter – 1.25″ Online Sale
+
Quick View

Celestron

Celestron Universal T-Adapter – 1.25″ Online Sale

$33.95 Original price was: $33.95.$30.60Current price is: $30.60.
Sale!
Celestron Ultima Pan Tilt Head Tripod Fashion
+
Quick View

Celestron

Celestron Ultima Pan Tilt Head Tripod Fashion

$86.95 Original price was: $86.95.$69.60Current price is: $69.60.
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
  • Sky-Watcher CQ350 Pro Mount w/ Heavy Duty Field Tripod Discount Sky-Watcher CQ350 Pro Mount w/ Heavy Duty Field Tripod Discount $4,265.00 Original price was: $4,265.00.$90.00Current price is: $90.00.
  • Celestron RS-232 Cable for NexStar & CGE Mounts Online Celestron RS-232 Cable for NexStar & CGE Mounts Online $22.95 Original price was: $22.95.$21.95Current price is: $21.95.
  • Sky-Watcher Star Adventurer Dec Bracket Online Hot Sale Sky-Watcher Star Adventurer Dec Bracket Online Hot Sale $48.00 Original price was: $48.00.$43.20Current price is: $43.20.
  • Product Product
Featured
  • Takahashi 17.63 lb. Counterweight for Takahashi EM400 Mount Supply Takahashi 17.63 lb. Counterweight for Takahashi EM400 Mount Supply $554.99 Original price was: $554.99.$93.00Current price is: $93.00.
  • IOPTRON 1.25″ ERECT PRISM DIAGONAL Online Hot Sale IOPTRON 1.25″ ERECT PRISM DIAGONAL Online Hot Sale $25.00 Original price was: $25.00.$24.00Current price is: $24.00.
  • Starlight Xpress Trius Pro 834 Cooled Monochrome CCD Camera – Blue Edition Cheap Starlight Xpress Trius Pro 834 Cooled Monochrome CCD Camera – Blue Edition Cheap $2,698.50 Original price was: $2,698.50.$97.00Current price is: $97.00.
  • Astrozap Solar Film Filter for ETX80, 90 & C80 Supply Astrozap Solar Film Filter for ETX80, 90 & C80 Supply $70.80 Original price was: $70.80.$56.60Current price is: $56.60.
Top Rated
  • Sky-Watcher CQ350 Pro Mount w/ Heavy Duty Field Tripod Discount Sky-Watcher CQ350 Pro Mount w/ Heavy Duty Field Tripod Discount $4,265.00 Original price was: $4,265.00.$90.00Current price is: $90.00.
  • Celestron RS-232 Cable for NexStar & CGE Mounts Online Celestron RS-232 Cable for NexStar & CGE Mounts Online $22.95 Original price was: $22.95.$21.95Current price is: $21.95.
  • Sky-Watcher Star Adventurer Dec Bracket Online Hot Sale Sky-Watcher Star Adventurer Dec Bracket Online Hot Sale $48.00 Original price was: $48.00.$43.20Current price is: $43.20.
  • Product Product
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?