Agena 50mm Finder / Mini Guide Scope with Helical Focuser for CCD Autoguiding

Description

Agena 50mm Finder / Mini Guide Scope with Helical Focuser for CCD Autoguiding
Description
Ordering Info
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1. PRODUCT DESCRIPTION
50mm guide scope is designed for use with telescopes up to 1500mm focal length for astrophotography autoguiding applications
Includes a built-in helical focuser for smooth, precise focusing of guide stars without field rotation
Designed for use with small-chip CCD autoguider cameras having a 1.25” nosepiece
Bright, wide-field optics provide many potential guide stars in view
Dovetail guide scope bracket installs on virtually any telescope with a dovetail shoe
Lightweight yet extremely capable
Agena's compact 50mm StarGuider II Mini Guide Scope with Helical Focuser package will be just the ticket for your long exposure astrophotography autoguiding needs. It is an excellent accessory for telescopes with a focal length of up to 1500mm, and is perfectly suited for use with small-chip CCD autoguiders. Its light weight adds very little to your autoguiding setup thus putting less strain on your mount's tracking mechanism, allowing for smoother guiding. A guidescope is a must for accurate astrophotography exposures even with high precision mounts. And the price of this accessory will add little strain to your astrophotography budget.
The StarGuider II features a 50mm fully-multicoated achromatic doublet objective. Its 162mm (f/3.2) short focal length design provides a bright, wide field which aids in the location of suitable guide stars. All internal surfaces of the tube are painted a flat black to improve contrast.
The helical focuser on the StarGuider II retains a fixed orientation so that your CCD autoguider will not rotate during focus adjustments. The focuser moves the autoguider in or out while maintaining its orientation relative to the light path. This ensures that the guide star field stays fixed while focus adjustments are made.
The helical focuser has a 12.5mm travel range and is designed to produce zero backlash. This eliminates flexure while focusing. The helical focuser ring is ribbed to improve grip and a thumbscrew locks the focuser in place once best focus is achieved.
In addition to an optical tube with a helical focuser, this package includes an adjustable finder bracket, a universal dovetail mounting base, as well as an adapter plate to allow you to easily mount this guide scope on a variety of telescopes in various configurations. The bracket should also fit directly into the Synta/Vixen style finder bases already found on many telescopes, without the need for the included mounting plate/base (although these are also provided should the need arise). However, please note that although this base has a standard Vixen/Synta style
design
, there is no standard defined
size
for this design. As a result, it is possible that this bracket may not fit into other bases and some filing/adaptation may be required.
The 1.25" autoguider receptacle features three locking thumbscrews for a secure fit. Simply insert the 1.25" nosepiece of your CCD camera and tighten. Couple this package with a main scope and a 1.25" autoguider CCD, and you will be ready to experience a new level of accuracy that autoguiding brings to long exposure astrophotography - without the bulk and expense of a larger dedicated guide scopes that were formerly required. The camera-end of the 1.25" eyepiece holder also features a short male T / T2 thread (M42x0.75) on the outside.
Focusing is achieved by turning the helical focuser ring at the rear of the scope. The CCD will not rotate during focus adjustments. Using the included parfocal ring on the autoguider or CCD camera nosepiece provides some more focusing flexibility, and it also allows you to repeat the autoguiding setup between different imaging sessions.
Specifications:
- Objective Diameter = 50mm
- Focal Length = 162mm
- Focal Ratio = f/3.2
- Fully multicoated, air-spaced achromatic doublet objective lens with smooth helical focus
- OTA Material = Aluminum
- OTA weight (with finder bracket and end caps) = 1 lb - 8.3 oz
- OTA length = 180mm (7.09")
- Main OTA diameter = 53.4mm (2.10")
- Dewshield outside diameter = 57.45mm (2.26")
- CCD locking screws = 2x, M4 threaded aluminum
- Helical Focuser locking screw = 1x, M4 threaded aluminum
- Finder adjustment screws = 2x, M6 threaded plastic (may be white or black)
- Flat mounting plate hole specifications = Center hole, 1x, M6 thread (not 1/4"-20 thread); Holes on sides, 2x, M4 thread
- 1.25" parfocal ring weight = 0.2oz; Vixen-style dovetail base weight = 1.5oz; Flat mounting weight plate = 1.8oz
What’s Included and What's Not:
A 50mm achromatic doublet guidescope with helical focuser, finder bracket, dovetail base, flat mounting plate, 1.25" aluminum parfocal ring, Allen wrench (hex key), objective end cap, and 1.25" dust plug are included. Please note that no instruction sheet is included, but you can find this easily online for similar guidescopes. Also note that no CCD is included but compatible CCD cameras are readily available. The only requirement is that the CCD has a 1.25" nosepiece installed.
Note:
Occasionally, the product you receive might have a slightly different cosmetic appearance or labeling than what is shown. This can often change from batch to batch according to the whims of the manufacturer. However, you will always receive a brand new, original product as described above.
Description copyright: Agena AstroProducts - Reproduction without permission prohibited.
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2. ORDERING INFORMATION
Payment:
We only accept Paypal and major credit cards through Paypal.
Shipping Method:
United States Postal Service (USPS), unless otherwise specified.
Checkout:
Please pay for the item(s) within 3 days from your account on eBay or by using the link in the email you receive from eBay.
Shipping Discount:
We offer shipping discounts if you order multiple quantities/items. eBay will automatically show you the correct, discounted shipping costs when you check-out.
Combining Purchases:
You can combine shipping for items purchased from us on eBay within 3 days. Buy the items individually, and check out together for all items. eBay will combine the shipping weights and show you the discounted shipping cost. You must check out for all items together via eBay for this. We cannot combine shipping costs after you check out individually for your purchases.
Sales Tax:
8.5% sales tax added if your Ship-To address is in California.
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3. US SHIPPING
Delivery Time:
Most orders ship within 1 business day of receiving payment. First Class shipments will take 3-5 days to arrive after we ship it. Priority Mail shipments will take 2-3 days. However, these delivery times are NOT guaranteed by the USPS. Delays of up to 2 weeks can occur in about 5% of the shipments.
Tracking/Delivery Confirmation:
eBay will update you once your order ships. You can see the order status or tracking information from your eBay account at any time.
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4. INTERNATIONAL ORDERING / SHIPPING
Shipping Cost:
Click on the "Shipping and Payments" tab above and select your country to see your shipping choices and cost. If you need a shipping cost estimate for multiple items, please contact us.
Delivery Time:
1) USPS First Class International:
Delivery takes about 3-4 weeks after we ship your package.
This can frequently take 4-6 weeks or more for several countries (8 weeks for Italy, Argentina, and South Africa; 8-12 weeks for Brazil)
.
THERE IS NO TRACKING FOR FIRST CLASS SHIPMENTS. The information shown in your eBay account is just a customs form number - it is NOT a tracking number as incorrectly indicated by eBay.
Once your package ships, we can do nothing but wait until your package arrives. Please do not become impatient and contact us in 2-3 weeks if your package has not arrived. If you don't receive the package in 6 weeks, contact us and we will work with you to resolve the issue. If you don't want to take the risk of this delay, then DO NOT USE First Class mail - use Priority or Express shipping instead.
(2) USPS Priority Mail International:
Delivery takes 1 - 2 weeks after we ship your package. This can sometimes take 3-4 weeks to several countries. The USPS provides some basic tracking information for Priority shipping.
(3) USPS Express Mail International:
Delivery usually takes 5-10 business days after we ship your package. You will receive a tracking number with which you can track your shipment from USPS.com. Note: If you use this option, you must send us your phone number when you check-out or else your shipment will be delayed. This is required for international postal forms.
Again, these delivery times are NOT guaranteed by the US Postal Service. The most common reason for delays is slow customs inspection and clearance in your country, and can be very long, even for Express mail packages. Upon shipping your order, delivery delays are beyond our control, so do not leave us negative feedback or file a Paypal claim if your package is delayed. Delays are quite common but losses are very rare, so your patience/cooperation will be greatly appreciated.
Customs and Duties:
You are responsible for any duties and taxes that may be levied in your country. These are not included in the item price or shipping cost. We have no control over these charges and cannot predict what they may be or if they will be levied upon delivery. Customs policies vary widely from country to country (Some countries such as UK are strict about imposing hefty customs duties). It is your responsibility to check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the delivery company or your country's postal service, or collected when you pick the item up. These fees are NOT additional shipping charges.
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5. RETURN/EXCHANGE POLICY
US Orders:
Returns must be shipped back
within 30 days
. All returned items must be in brand new, resalable condition with original manufacturer’s packaging. A minimum restocking fee of 10% will be deducted if there is any evidence of use or wear, dirt, scratches, missing packaging/parts, etc. We may levy a larger restocking fee if the condition warrants it, or even refuse returns entirely if returned in heavily used/abused condition. Shipping fees are non-refundable (for items with free or discounted fixed shipping, the actual outbound S&H cost we incurred will be deducted) and you are responsible for all return shipping costs. Please contact us first before returning an item.
International Orders:
No returns/exchanges accepted unless the item we shipped is defective. Please research the product and ask us any questions BEFORE you purchase to make sure you are buying the correct item for your needs.
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