Reduce the effects of sodium vapor light pollution on your night sky images.

Please see notes on current shipping delays due to COVID-19 below.

  • available exclusively on lonelyspeck.com
  • three square filter sizes available (85mm, 100mm, & 150mm)
  • requires a square filter holder and the appropriately-sized system adapter ring to fit your lens (not included)
  • anti-reflective multi-coating greatly reduces internal reflections and ghosting
  • premium filter pouch included
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View our product details page for more information and sample images.

In-stock items ship out in 2-3 business days. Backordered items ship out in 2-3 weeks.

Please note all shipments are currently experiencing delays due to COVID-19 and limited air transportation availability. We truly appreciate your business and patience during this time.

Domestic Shipping Delays: We are experiencing periodic shipping delays that sometimes take 1-2 weeks on domestic shipments that normally take 2-3 days. 

International Shipping Delays:  We are currently experiencing more extreme delays on international shipments.  In some cases, shipments are taking 2 months to reach their destination. (Priority shipping is experiencing just as many, and at times even longer, delays.) We have resumed international shipping to most countries at this time. For more information, please check the USPS International Service Disruptions page for country-specific information.

*Ships from Florida or California. Tracking may not be available for certain international destinations. You are responsible for any customs fees imposed by your country (e.g. VAT is not included).

Additional information

Weight 10 oz

85mm square filter, 100mm square filter, 150mm square filter