If the Lunt 50 had been available when I got my PST, I would have purchased it instead. Pressure tuners are less finicky than tilt tuners, and generally have a larger, rounder sweet spot.Nothing against the PST, it's terrific, but the Lunt 50 is a bit better. 10mm more aperture as well. Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Sue Ellen Ebertz <ebertzs@comcast.net> Date: 7/7/17 10:00 AM (GMT-07:00) To: utah-astronomy@mailman.xmission.com Subject: [Utah-astronomy] comparison between Lunt LS50THa and Coronado pst Hi Fellow Observers, I'm wondering if anyone around can compare these two from experience. I was very pleased with the Coronado PST detail of prominences and coronal holes when observing through Chuck's scope, and will probably get one of these after the eclipse. Just out of curiosity, 'm wondering if the pressure tuner on the Lunt is worth the extra expense. My guess is (without understanding) is that the tuning enables the viewer to see different focal planes but with different focusing. My preference is maybe not to keep working the focus for different aspects of the sun. The learning curve with tuning and focusing the Lunt seems higher (with better results?). So I'm here to learn. Thanks ya'll for your time and expertise. Best, Shoshana _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".