{"id":8927,"date":"2020-03-04T09:36:07","date_gmt":"2020-03-04T13:36:07","guid":{"rendered":"https:\/\/starlightcascade.ca\/blog\/?p=8927"},"modified":"2020-03-04T11:12:53","modified_gmt":"2020-03-04T15:12:53","slug":"8927","status":"publish","type":"post","link":"https:\/\/starlightcascade.ca\/blog\/2020\/03\/8927\/","title":{"rendered":"Allskypi camera sensor temp review"},"content":{"rendered":"<p><a href=\"https:\/\/starlightcascade.ca\/blog\/wp-content\/uploads\/2020\/02\/IMG_20200215_100242-1000.jpg\"><img decoding=\"async\" src=\"https:\/\/starlightcascade.ca\/blog\/wp-content\/uploads\/2020\/02\/IMG_20200215_100242-1000.jpg\" alt=\"\" width=\"200\" class=\"aligncenter size-full wp-image-8890\" \/><\/a><br \/>\nAllskypi is an allsky camera system with a ZWO ASI 120MC camera and wide angle lens protruding out into a 4&#8243; transparent dome, with the remainder of the camera and the raspberry pi beneath it in the housing.<\/p>\n<p>The dome was condensing and frosting, so we added a heater inside the dome.<\/p>\n<p>Now the sensor temperatures are higher than we would like, but the condensing and frost problems seem to be fixed.<\/p>\n<p><a href=\"https:\/\/starlightcascade.ca\/blog\/wp-content\/uploads\/2020\/03\/allskypisensortemp.jpg\"><img decoding=\"async\" src=\"https:\/\/starlightcascade.ca\/blog\/wp-content\/uploads\/2020\/03\/allskypisensortemp.jpg\" alt=\"\" width=\"200\" class=\"aligncenter size-full wp-image-8928\" \/><\/a><br \/>\nThe holes in the lid  were drilled pre-dome-heater, hoping to have hot air from inside the housing rise up into the dome.<\/p>\n<p>Now perhaps the holes are allowing hot air from the domeheater to infiltrate back into the housing and heat up the camera sensor.<\/p>\n<p>I plotted the temperatures of the sensor, air and dew from our nearby weather station and got this below.<\/p>\n<p>So looking at this graph, what more can be done to lower the camera sensor temperature (which causes more hot pixels in a 60 second exposure)? <\/p>\n<p>Idea 1) plug the  holes in the lid to stop airflow from dome to housing<\/p>\n<p>Idea 2) add vent holes at the top of the housing, below the lid and dome, to allow hot housing air to escape.<\/p>\n<p>Idea 3) build some kind of airconditioner.. ie a Peltier cooler, to cool air inside the housing.<\/p>\n<p>Idea 4) add a spacer between the bottom of the camera and its mount for better air flow.<br \/>\nCome warmer air temps in the summer, the sensor temp will definitely get too high&#8230; already in the last two weeks it has hit 15C!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Allskypi is an allsky camera system with a ZWO ASI 120MC camera and wide angle lens protruding out into a 4&#8243; transparent dome, with the remainder of the camera and the raspberry pi beneath it in the housing. The dome was condensing and frosting, so we added a heater inside the dome. Now the sensor [&hellip;]<\/p>\n","protected":false},"author":494,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,15],"tags":[],"class_list":["post-8927","post","type-post","status-publish","format-standard","hentry","category-astronomy","category-tech"],"_links":{"self":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts\/8927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/users\/494"}],"replies":[{"embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/comments?post=8927"}],"version-history":[{"count":5,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts\/8927\/revisions"}],"predecessor-version":[{"id":8933,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts\/8927\/revisions\/8933"}],"wp:attachment":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/media?parent=8927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/categories?post=8927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/tags?post=8927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}