Agena 50mm Deluxe Straight-Through Finder / Guide Scope with Helical Focuser

Description

Agena 50mm Deluxe Straight-Through Finder / Guide Scope with Helical Focuser
Description
Ordering Info
USA Shipping
International Orders
Returns
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1. PRODUCT DESCRIPTION
50mm f/3.8 fully multicoated compact finder / guidescope with 190mm focal length
Precise dual-focus mechanism makes it easy to achieve and hold focus without play or wiggle and without rotating the eyepiece or autoguider in the focuser
Compact and lightweight scope won't take up much space or weigh down your mount
Moderate aperture reveals many guide stars not accessible with smaller guidescopes
Ideal for guiding long-exposure imaging with refractors and reflectors up to focal length of 1500mm
Serves as a large finderscope for bright views of stars and deep-sky objects using 1.25" eyepiece (not included)
Ideal for autoguiding long-exposures with DSLR or CCD cameras, this moderate-aperture 50mm guidescope gives bright images and puts within reach many guide stars not accessible with smaller-aperture scopes. With an overall length of 8.1" (205mm) to 10.5" (267mm), and a weight of 1lb-6.2oz, this f/3.8 refractor with a focal length of 190mm won't take up much space or weigh down your mount. It works best for imaging with refractor or reflector telescopes with focal length up to 1500mm.
Precision Dual-Focus Mechanism
The focuser includes a drawtube with a total travel of 32mm for coarse focusing. It is marked in 1mm increments. Once set, the drawtube locks in position with a single thumbscrew (please note that only one screw is required and included, even though there are 3 threaded holes on the tube).
Precise, fine-focus adjustment comes from a newly-engineered helical focusing mechanism with 10mm of travel. The fine focuser has a knurled focusing collar and a 0-10 scale on the drawtube with 0.05mm increments. A thumbscrew is also provided to lock down the helical drawtube where desired. The design of the precision helical focuser eliminates any play in the drawtube over its entire travel range.
The total focus travel range is thus 42mm.
The helical focuser also incorporates a fixed-orientation design. That means your autoguider only moves in and out during fine focusing and does not rotate, so the camera orientation and field of view of the guide stars remains fixed.
The focuser is machined with male T-threads to securely attach an autoguider that has a removable nosepiece and female T-threads. Or if your autoguider has a fixed 1.25" nosepiece, you can insert it directly and lock it into the focuser's accessory holder. A compression ring makes sure you don't mar your autoguider or eyepiece.
Alignment Rings and Versatile Dovetail Mounting Options
The scope includes dual mounting rings with three nylon-tipped collimation screws per ring. The rings are attached to a 1.23" (31mm) wide by 3.5" (89mm) long dovetail mounting bar which fits into Vixen/Synta-style dovetail finder bases (not included) found on many telescopes. The dovetail bar also includes three threaded through-sockets for other attachment options (one 1/4"-20 threaded hole in the middle and two M8 threaded holes, one on either side). For example, it can be mounted on one of the pre-drilled holes on the tube rings of many refractor and Newtonian reflector optical tubes, or on the rear of most Schmidt-Cassegrain telescopes using a suitable optional dovetail base.
An Excellent Large-Aperture Finderscope
The guidescope also makes an excellent large-aperture finder. It accommodates many 1.25" eyepieces, including illuminated reticle eyepieces such as the Agena 1.25" Wireless Illuminated Reticle Eyepiece with Focusable Single Crosshair (not included). This 24mm focal-length 50° AFOV eyepiece, for example, turns the scope into an approx. 8x50 straight-through finder with a wide 6.3° field of view that gives bright views of faint stars and deep-sky objects not visible in smaller stock finders.
Main tube diameter = 54.5mm
Dewshield diameter = 60.7mm
Please Note:
All these finders have, or will soon develop, light indentation marks on the finder tube from the delrin-tipped screws on the finder bracket. This is not an indication of a defective or used finder.
This finder cannot be used with a diagonal to make it a right angle finder. You will not have sufficient in-focus travel.
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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