90mm x 1mm pitch adapter to put Feather Touch Focuser on Astro-Tech AT8RC astrograph

by Starlight Instruments Print

What would you like to print?
(Reviews and Documents/Videos will not be printed)

Basic Product Information
Full Description
Tech Details
Supplied Accessories
Recommended Accessories
Images

Print
More product information
When using an Astro-Tech #AT8RC 8” Ritchey-Chrétien astrograph, the weight of very heavy equipment trains (camera, plus filter wheel, plus temperature-compensated electric focuser, etc.) may cause the standard equipment Crayford focuser drawtube to tilt slightly when fully extended, affecting the focus.

In such rare cases, the standard Crayford focuser can be user-replaced by an optional Feather Touch #FT-1.5BC 2” focuser from Starlight Instruments for a more rigid imaging equipment connection. This 90mm x 1mm pitch Feather Touch adapter is needed to connect the #FT-1.5BC to the #AT8RC. The adapter threads onto the 90mm rear cell thread of the #AT8RC in place of the standard Crayford focuser. The Feather Touch #FT-1.5BC focuser slips into the adapter and is held in place by three hex-head setscrews in the adapter.

Only focusers with a maximum 1.5” drawtube travel, such as the Feather Touch #FT-1.5BC, are recommended with the Astro-Tech #AT8RC 8” Ritchey-Chrétien.

This adapter and the Feather Touch #FT-1.5BC focuser can also be used with the 6” #AT6RC Ritchey-Chrétien astrograph. However, the #AT6RC is primarily designed for use with lighter weight webcam/Deep Sky Imager-type camera/DSLR imagers, not with heavy long equipment train CCD imaging setups. These lighter weight imaging systems are unlikely to cause any focuser issues. The addition of a Feather Touch focuser and this adapter will add little to the performance of the #AT6RC, although significantly to the cost (about half the cost of the #AT6RC itself).

Weight:
The weight of this product.
3.2 oz.
Warranty:
1 year
There are currently no Cloudy Nights reviews associated with this product

User Ratings/Reviews from our Customers (www.astronomics.com)
Overall Product Rating: AstronomicsAstronomicsAstronomicsAstronomicsAstronomics(0.00)   # of Ratings: 0   (Only registered customers can rate)

We haven't recommended any accessories for this product quite yet... check back soon or call one of our experts (1-405-364-0858).
This product does not have supplied accessories... or supplied accessories have not been assigned.
Documents
No documents have been associated with this product.
Videos
No videos have been associated with this product.
There are currently no formulas associated with this product
Starlight Instruments - 90mm x 1mm pitch adapter to put Feather Touch Focuser on Astro-Tech AT8RC astrograph

Click icon(s) below & hover image above for zoom

Starlight Instruments - 90mm x 1mm pitch adapter to put Feather Touch Focuser on Astro-Tech AT8RC astrographClose-up of the female 90mm threading that connects to the AT8RC rear cell. One of the setscrews that hold the focuser is visible.
In Stock
   · No ratings/reviews   Only registered users can submit ratings - Register Here
Our Product #: M90X1
Manufacturer Product #: A20-M90X1
Price: $79.00  Ground shipping for this item is $8.95 - Click for more info
By adding 1 of these items to your cart your order total will be less than $100, and will ship within the 48 contiguous United States for $8.95. Add $21.00 to your order, however, and you qualify for free ground shipping (heavy items with fixed shipping, such as counterweights, excluded).
Quantity:   

 E-mail this product to a friend E-mail this product to a friend

Your Email:  
Your Friend's Email:  
Confirm Friend's Email:  

Comments:
  200 characters or less
 

An email containing a link to this product has been sent to the email address you provided.

Clear Skies!
Astronomics

 Have a question? Do you have a question about this product?
 Found a better price? Found a lower price? Click to let us know... or call 800-422-7876 before you buy.

If you’ve found a lower delivered price on this product, let us know about it below. We’ll do our best to meet or beat that price and will get back to you within one business day with our best offer. Thanks for giving us the opportunity to give you a better deal.

Your Name:  
Price:  
From Who:  
Context:  Magazine AdOnline
Website Address:  
Cut and paste the web address into the box above
Your Email:  
Confirm Email:  


We’ll do our best to meet or beat that price and will get back to you within one business day with our best offer. Thanks for giving us the opportunity to give you a better deal.

Clear skies,
Astronomics


This 90mm diameter Feather Touch adapter is needed when upgrading the Astro-Tech AT8RC Ritchey-Chrétien astrograph to an optional Feather Touch #FT-1.5BC focuser . . .





. . . our 34th year