Estimated Arrival: Between May 20 and May 26. *ETA to USA Only
Shipping & Returns: Satisfaction guaranteed 30 day return policy.
We offer knobs for the FPI Protostar secondary that has either 8-32 or 10-24 collimation screws. FPI Protostar secondary assemblies are used in several different Newtonian designs. Select knobs for your secondary from the list below. Price is for a complete set of knobs.
Fits: FPI Protostar secondary assemblies using a 8-32 x 1 inch long set screw for collimation adjustment
- These knobs will fit the FPI Protostar secondary assemblies with 8-32 x 1 inch long set-style collimation screws. The outside edge of each knob is slightly in the light path.
Black plastic, 13mm (1/2”) diameter
We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.
As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. We will process the charges to your credit card and your order will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at firstname.lastname@example.org.
Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.
We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.