Re: LX200GPS unattended
- I like that webcam, but they don't export overseas.
Its price should be very good. So I am now searching a similar type here
I need to know if IR leds disturb the CCD imaging.
--- In LX200GPS@yahoogroups.com, "Mike" <mike@...> wrote:
> I recently purchased a Rocketfish HD web cam and put it in my
> It's a USB cam and is hooked up to a PC in the observatory and the
> is mounted at one end, look at the scope and down the length of the
> roll-off. This cam has pretty good pan/zoom features so that I can
> different angles - up/down/left/right. It also has audio capabilities
> noise cancellation etc.
> From: LX200GPS@yahoogroups.com [mailto:LX200GPS@yahoogroups.com] On
> Of Paul A. Valleli
> Sent: Saturday, October 30, 2010 9:39 PM
> To: LX200GPS@yahoogroups.com
> Subject: Re: [LX200GPS] Re: LX200GPS unattended
> 75, 90 and 120 degrees FOV, about 25 USD apiece.
> I gave the email: Security Direct, in New Jersey, USA
> The Logitech C350 USB webcam I just bought at Staples for 24 USD had a
> rectangular filter cemented over the CCD. Removing it allows near
> light to be observed to 1.1 microns
> ( 11,000 Angstroms),the limit of Silicon sensitivity. I peeled it off
> razor blade.
> There is no increase in sensitivity to visible light.
> If the blocking filter is applied to one of the lens surfaces, the
> lens needs to be replaced.
> ---- Original message ----
> Date: Sat, 30 Oct 2010 18:53:34 -0000
> From: "EmilianoP" eggpap@... <mailto:eggpap%40gmail.com> >
> Subject: [LX200GPS] Re: LX200GPS unattended
> To: LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> "super wide-angle "Z-mount" lenses "
> where have you bought those?
> "some lenses have the filter applied to the last lens surface"
> In this case you must change the objective or only to detach the
> Doing so you get a higher sensibility?
> --- In LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com> ,
> A. Valleli" valleli@ wrote:
> > Emiliano, Mike, all:
> > I too, am in the process of automating my observatory as the cold
> weather is approaching Massachusetts. The obs. is 175 ft. from the
> > I planned to have three webcams inside to monitor the scope position
> and dome position and one across the lot for security. I expected to
> have four windows open, one for each webcam.
> > Over the past year, I have bought several webcams of varying brands
> such as Philips TouCam, Logitech, Staples, etc. I have found out that
> Windows does not like this at all as each camera seems to want to use
> the same driver. One solution is to buy three Logitech 4000 webcams,
> this is not foolproof as different versions of Windows or PC brand may
> still cause problems.
> > Another solution is to go with a low cost system from Security
> of New Jersey. They sell complete security systems including software
> and the ability to record to hard drive for future playback review.
> more money, one could get remote control cameras to scan the area.
> > www.securitycamerasdirect.com
> > I purchased several super wide-angle "Z-mount" lenses to put on the
> TouCam and Logitech cameras in place of the normal lens.
> > Another thing that can be done if the IR blocking filter is on the
> chip is to very carefully peel it out of its housing with a razor
> However, some lenses have the filter applied to the last lens surface.
> > Most brands use this Metric thread size that is very close to 44
> threads per inch.
> > Some of the more recent webcams now have an even smaller threaded
> interface - don't know what the interface is called.
> > Starman Paul
> > ---- Original message ----
> > Date: Thu, 28 Oct 2010 21:34:08 -0400
> > From: "Mike" mike@
> > Subject: RE: [LX200GPS] Re: LX200GPS unattended
> > To: LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> > Emiliano - I would contact Digital Loggers and ask about running at
> 220V -
> > there may be an adapter that can handle the voltage difference.
> > Regarding video/audio surveillance, I think it's better to go with
> having a PC at the observatory. You can remote to the PC, and hookup
> web-cams, etc. as needed.
> > I have a PC out in the observatory, and a camera. I'm going to add
> additional web cam which should be able to handle audio, but I'll have
> to look into that a bit.
> > As far as unexpected slews, I guess you have to determine how
> dependable the mount's electronics etc. are and see if it meets your
> comfort level. With my setup, I usually let it do automated series of
> images throughout the night while I'm asleep, then park itself when
> done. In my setup I have
> > a 12" ACF OTA on a Losmandy Titan mount, and I have to say, the
> reliability factor is very high (not the case with my old lx200gps).
> > I have had one or two scary moments, in three years with this setup,
> but nothing that caused any damage.
> > Unattended operation is something that I think you work up to - it
> takes some experience with the mount, the electronics, the software
> etc., and a little extra technical know-how, but it can be done.
> > -Mike Renzi
> > From: LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> [mailto:LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com> ]
> > Of EmilianoP
> > Sent: Thursday, October 28, 2010 1:03 PM
> > To: LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> > Subject: [LX200GPS] Re: LX200GPS unattended
> > Mike,
> > thanks for your infos. I'm going to examine the features of the web
> > I hope it is compatible with Italian ACV (220V - 50Hz).
> > What about the audio/video surveillance?
> > And how to prevent unexpectded slews?
> > Emiliano
> > --- In LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> <mailto:LX200GPS%40yahoogroups.com> ,
> > mike@ wrote:
> > > I recently installed a web power switch in my observatory - it's
> really cool, has an embedded HTTP server so you can power on/off
> anything that's plugged into it. You can check it out here:
> > > http://www.digital-loggers.com/lpc.html
> > > My roll-off is 200 feet away. I can use my garage remote control
> open the roof (recently installed a garage motor to power the roof),
> I can power on two CCD cameras, the scope, and other stuff. I'm
> of rigging up a hairdryer on the side of the observatory, where the
> > points when it is parked. I can then, on dewy nights, park the
> turn on the hair dryer for ten minutes, then turn it off, and continue
> on using the scope...
> > > -Mike Renzi
> > > www.starhoo.com
> > > From: LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> > [mailto:LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> <mailto:LX200GPS%40yahoogroups.com> ]
> On Behalf Of EmilianoP
> > > Sent: Wednesday, October 27, 2010 11:23 AM
> > > To: LX200GPS@yahoogroups.com <mailto:LX200GPS%40yahoogroups.com>
> > > Subject: [LX200GPS] LX200GPS unattended
> > > Hello,
> > > I'm working hard to get my dome remotely controlled by PC and
> > > I'm afraid, however, to unattend the scope since may happen to
> forget the scope turned on or something goes wrong and the slews don't
> stop or other troubles that may broke cables etc.
> > > This is my current connection:
> > > PC with ethernet gigabit net-card --- Cat 6 cable --- USB Server
> (enters Ethernet one side and exits two USB ports)
> > > Main CCD usb connectd to the server
> > > LX200GPS connectd to the server by serial to usb interface.
> > > I am now looking for * something to power on remotely all the
> equipment (maybe X10 modules or transceiver switch modules or other
> could tip)
> > > * a wireless audio-video infrared camera
> > > I though the audio is necessary to get the motors sound and the
> video to surveil the scope, but I think the IR leds could disturb the
> CCD imaging and that without IR the indoor light of the dome is too
> low to see something.
> > > Another solution could be to set the Autostar max slews, but what
> happens if the software freezes during a slew or the PC Power turn
> > > Emiliano
> [Non-text portions of this message have been removed]
- Gday Nick
Almost the same thing, but not quite.
IIRC, Changing Polar->Terrestrial->Polar can affect alignments when a polar 2 star was done. Need to recheck my notes.
Another benefit of setting the tracking rate to zero if Alt<0 means it cant accidentally start "retracking".
The user has to slew it out of the danger zone manually.
Andrew Johansen Melbourne Australia
--- In LX200GPS@yahoogroups.com, "paizisn" <paizisn@...> wrote:
> How about:
> if Alt < 0 set Tracking to terrestrial.
> --- In LX200GPS@yahoogroups.com, "johansea" <johansea@> wrote:
> > Gday Dick
> > --- In LX200GPS@yahoogroups.com, "autostaretx" <rseymour@> wrote:
> > >
> > > --- In LX200GPS@yahoogroups.com, "paizisn" <paizisn@> wrote:
> > > So i asked myself, "can it be patched?"... and (without checking) i don't think it would be easy... the scope does not necessarily keep track of its elevation above the horizon when it's tracking in Polar.
> > I think it may actually do the calcs, but you dont see them
> > ( This wont matter if its patched, and its hemi agnostic )
> > In polar, it may be as simple as
> > if Alt < 0 set "tracking rate" to zero ( in the calc track rate section )
> > This preserves alignment and slew keys will still work.
> > Probably cant look at it for a week tho.
> > Andrew Johansen Melbourne Australia