Mike Visual Astronomy
Mike Traub(Mr. Congeniality): I've learned that I don't suffer from insanity, I enjoy it!:Shipfitters mottos; Cut to suit, pound to fit, paint to hide!: If it dosen't fit get a bigger hammer!......Retired and BROKE!!!!!!!!: The Maypole Observatory.
CPC 9.25 TV 76, 102, NP 101 Unitron 114 Gibraltar mount Half Hitch Mk III SolarMax 90 .7A/B15 Coronado PST Eyepieces from the sublime to the ridiculous
“I am the only person to ever ace a 1951 USAF resolution test. My 'to observe' list says 'done'. I do not use charts or atlases when I starhop; men do not use maps. One of my sketches won an SBIG deep sky imaging contest. I am the life of star parties I have never attended. I never say anything looks like a faint fuzzy - not even a faint fuzzy. Pilots aim green laser pointers at me. Don Pensack proofreads my CN forum posts.” - The Most Interesting Astronomer in the Universe
Quote:The last thing I want is more battery dependency in the field. I use a Grabber isothermic hand warmer satchel in one of the spaces below a side drawer to keep my case moisture free for ~7-10 hours. In bulk they go for about $0.25 each, so they're not expensive...
Dr. Willie K. Yee President Mid-Hudson Astronomical Assn. Member RAC, AOSNY, IDA, Astronomers Without Borders, Charlie Bates Solar Astronomy Project NexStar 50 Expert, Lunar 50 Expert; AL Outreach, Messier, and Sunspotters Awards Commander Prius Class Shuttlecraft Zhang Heng Teeter 13.1" f/4.5 Custom Dob, NexStar8 SE, Meade 80mm f/6 ED Apo, Meade 363 f/10 80 mm, Lunt LS60THa, PST dbl stk
Incidentally, I think skipping the heater was a good move. The last thing I want is more battery dependency in the field. I use a Grabber isothermic hand warmer satchel in one of the spaces below a side drawer to keep my case moisture free for ~7-10 hours.
Cliff Mygatt Astronomical League Master Observer
Astronomical League Lunar II & Constellation Hunter programs national coordinator President, Olympic Astronomical Society Bremerton, WA
Orion XT12i Fully flocked with Zambuto Mirror, Protostar quartz secondary and Moonlite CR focuser
Meade 8" LX10 SCT Fully Flocked with Magellan I DSCs
Orion 120mm and William Optics 80mm Refractors Ethos 21mm,17mm,13mm,10mm,8mm,6mm,4.7mm,3.7mm Nagler 31mm and paracorr type 1
Quote: Quote: "Sounds like someone skimped on their battery! Last thing I want to do is be dependent on a trip to Costco and pay extra for my EP warmer's when I already have with me a suitable power source."Here's why I think the in-case electrical solution is poorly conceived.1. It requires a wire from your mount/dew heater battery, which increases cable clutter around the scope and mount.
Quote: "Sounds like someone skimped on their battery! Last thing I want to do is be dependent on a trip to Costco and pay extra for my EP warmer's when I already have with me a suitable power source."
Quote: 2. Your case heater takes juice from the battery that your mount and scope dew suppression solution also relies on, reducing your maximum in-field time without needing a recharge.
Quote:3. It costs $175 (enough for two lifetimes of hand warmer packets ordered online annually, without a single trip to Costco ever).
Quote: 4. When you pack up for the night to drive home, unless you keep the case plugged in, moisture in the air inside the case will condense and settle on the eye lenses in transit. That doesn't happen with the hand warmer packets which work all the way home and all the way until dawn when you can box up the eyepieces in a moisture free environment.
Quote:Speaking of out-gassing... What about the finish inside the box? I assume it is laquer and that "should" be OK, but I wouldn't trust the plastics.Roy
Mark EON 80 - Twilight 2 | C11 - iEQ45 | Astro Physics 175EDF - 900GTO
Quote:.... Laquer being alcohol based, would probably out-gas very little if at all, but polyurethane seems to never lose its smell inside a box .....Roy