Estimated Arrival: Between Sep 22 and Sep 28. *ETA to USA Only
Shipping & Returns: Satisfaction guaranteed 30 day return policy.
IDAS LPS-D3 (formerly NGS1) light pollution suppression filters enhance the contrast of astronomical emission nebulae against a sky with both man-made and natural* sky glow sources, yet preserve color balance of broadband objects such as galaxies. As with other IDAS interference filters, the bandpasses are designed to accommodate the steep ray angles of fast optical systems.
- Ideal flat-top and moderate bandpass
- Excellent in-band transmission
- Steep bandpass edges minimize internal reflections
- Near IR (NIR) is blocked up to 1200nm
- Available in 52mm and 48mm sizes
- 2.5mm thickness (parfocal with other IDAS LPS filters)
- IDAS-proprietary IGAD/MBT/UFP quality
- Made in Japan
* Natural sky glow sources blocked include upper atmosphere oxygen and sodium lines which become visible from high-altitude, dark sky sites. See videos at the bottom of this page for background information on natural sky glow.
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 email@example.com.
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.