Solar eclipse maestro3/20/2023 ![]() ![]() If an image's exposure time was 2 seconds or longer, the exposure time was used for the display time. The available time within a sequence was then evenly evenly distributed amongst the images within the sequence in order to determine the display time of each image. The beginning and ending of each exposure ramping sequence was positioned in the video according to the file's timestamp (+/- 1 second). While each 70D's clock was synchronized to GPS time with Solar Eclipse Maestro, the timing information recorded in each file's EXIF data is only accurate to the second. The still photos taken with the ES127ED and AT65EDQ are displayed at times representative of when they were taken, but are not absolutely synchronized with the video. The iPhone 6 video was synchronized by recording the GPS time displayed by Solar Eclipse Maestro. The videos shot with the Panasonic and the ES127ED were synchronized using the WWV time signal. The probe was placed near the ES127ED's focuser, on the underside on the tube, out of direct sunlight. Temperature data was obtained with a Lascar Electronics EasyLog data logger (EL-USB-TP-LCD) using a Type 2 probe set to record at a 2 second cadence. The imaging sequences of both DSRLs were controlled with Solar Eclipse Maestro. The iPhone was pointing roughly to the southeast. The iPhone was mounted on a stationary tripod about 10 meters to the southwest of the primary equipment. The Panasonic, ED127 and AT65EDQ were co-mounted on a polar aligned equatorial mount in order to track the sun throughout the eclipse. An iPhone 6 was used to record the video in the lower center frame. Shutter and ISO settings for each image are indicated in the video. Canon 70D DSLR at the prime focus of an AstroTech 65mm, f/6.5 refracting telescope (AT65EDQ), used for the images in the lower right frame. Canon 70D DSLR at the prime focus of an Explore Scientific 127mm, f/7.5 refracting telescope (ES127ED), used for the images in the lower left frame. ![]() Both the neutral density filter and the AstroSolar filter were removed for totality. The partial phases were shot using one neutral density filter (1/4 transmittance) in conjunction with a Baader AstroSolar film filter. Gain set to 'Low,' iris manually set to f/8, shutter manually set to 1/1000s and full zoom. Panasonic AG-HMC150P HD video camera, used to film the 'background' video. The following instruments were used in the creation of this video: The total solar eclipse was observed from Raspberry deLight Farms ( 43.18505517, -108.20629467) near Shoshoni, Wyoming, at an elevation of approximately 1,438 meters on August 21, 2017. Because of this, we're making a few of the photos available for download. Unfortunately, we were right in thinking that compression would do a number on the quality of the still photos. Steve: You know, I can't see a thing in these things. Joanna: Thanks for watching! I hope that you'll join us again soon! You can tell us about your eclipse experience in the comments! Steve: And it really isn't too early to start planning for it. You can always travel to Chile or Argentina for the 2019 eclipse or you can wait until 2024 for the next one to pass through the U.S. While many were calling this a 'once in a lifetime event,' there will be others. And then, you add video compression on top of that? It really is something that needs to be seen in order to be appreciated. The luminous strands of cotton candy surrounding a pit of infinite darkness that I saw just can't be captured with a single exposure. Steve: Unfortunately, this video doesn't really convey what the eclipse was like. Joanna: But, for now, we're going to fast forward through the partial phase and pick things up shortly before the start of totality. ![]() ![]() Steve: The technical details can be found in the video's description and, as always, if you have questions, feel free to leave them in the comments. Joanna: Other than a few early clouds and a slightly out of focus cell phone video, Frostbite Theater's expedition to view the 2017 total solar eclipse was a total success! ![]()
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