Jump to content
SAU Community

Recommended Posts

  • Replies 134
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

img4674crop222webqe2.jpg

Lovely :)

What lens are you using to achieve 560mm of focal length?

Hopefully next year once i come back from europe im gonna buy a telescope and hook up the 40d to that..

Have you tried that pic at 10% crop??

Edited by siddr20
ah man I so have to try that! fully need to get myself a cable remote...

What camera you got?

i one for sale.. suited for 350d and ***d canon slrs.. 5 bucks..

if it doesnt work more than happy to give refund :P

reason for sale - sold the 350d ages ago and got no use for the cable!!

OMG check this out..

What's even cooler to me, is that you captured your first nebula, too - the arrow I drew in the attached image points to M42 - the great nebula in Orion.

post-12579-1227395313_thumb.jpg

David

Wow, your rush job destroys anything I've attempted with star trails. The colors are awesome and I like the composition too. Congrats on your first constellation and deep sky object. The entire sword of Orion shows up very well. No failure here, just great work.

WOW so i captured my first nebula!!!

I always loved astronomy and hopefully next year once i come back from my europe trip i will be buying my first telescope!!

you know what that means :)

40d will be hooked up to that to capture some deep astronomy nebulas, clusters etc etc..

Edited by siddr20

I just got my results back from that picture of ORION..

This is what i captured

Hello, this is the blind astrometry solver. Your results are:

(RA, Dec) center:(85.6738, -10.0638) degrees

(RA, Dec) center (H:M:S, D:M:S):(05:42:41.712, -10:03:49.680)

Orientation:52.47 deg E of N

Pixel scale:288.60 arcsec/pixel

Parity:Reverse ("Left-handed")

Field size :64.13 x 42.73 degrees

Your field contains:

The star Sirius (αCMa)

The star Rigel (βOri)

The star Betelgeuse (αOri)

The star Adhara / Adara (εCMa)

The star Bellatrix (γOri)

The star Alnilam (εOri)

The star Wezen (δCMa)

The star Mirzam (βCMa)

The star Alnitak (ζOri)

The star Saiph (κOri)

IC 2118 / Witch Head nebula

NGC 1976 / Great Nebula in Orion / M 42

IC 434 / Horsehead nebula

IC 2177

Nice wish i had such big zoom lens!!

How do you find those extenders anyways? I wish they made one for efs lenses..

Any reason why you didn't choose the 2x extender?

With the 1.4x TC you only lose 1 stop of light. On my 400 f/5.6L with a 1.4x TC it actually becomes a 400 f/8L and auto focus is lost. If you use the same lens with a 2x TC it loses 2 stops of light so it would becomes a 400 f/11 L....

Also the 2x TC loses to much image quality as well. I hardly use my 1.4x TC..

Sorry another quick question - why did you choose just a fixed 400mm lens? You do much sports photography? Or do you have the 100-400m lens?

I wanted a long lens for a decent price, I was not keen to fork out 10k+ for the 400 f/2.8L so I chose the f/5.6L version.

Basically it comes down to this for me. The 400 prime is sharper, faster to focus, more ergonomic and does't have that crappy push/pull system the 100-400 uses. I thought about a long lens for years before I bought one. I use it a fair bit for surfing and other kinds of shots, its a good lens. Tack sharp. I have the 70-200 f/2.8L IS for shots under the 400mm length :)

Oh you got a 70-200 already.. That makes more sense now :yes: Wish i could afford it.. sigh

Thanks for the info about the extenders!!

Hopefully next year i can buy a telescope and hook up my slr to that!!

Xmetal - hmmmmm sorry but i just dont like the look of that car..

Did a quick test at 70mm with my new lens i bought today :P

I think it did just fine!! What you think?

IMG_1606a.jpg

Edited by siddr20

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Take the value it measured as, and pick the closest range available that is above the reading on the screen.   Also, no point just testing the coils. Read what has been said again. You need to test all your wiring, everything.
    • Does the scanner do all the CUs in the car, or only the ECU?
    • @666DAN sorry to bring you and old thread.     I've got my de+t done and it's all running great other than 1 small issue.    Car has remained auto with the na auto and tcm, I've used a stagea ecu with. NIstune board and everything is great other than my gear selection on the dash. It illuminates park, reverse, neutral, 3rd and 2nd when selected . But nothing when in  drive or what gear your in when you pop it into tiptronic. I'm sure there is maybe 1 wire in the ecu plug I need to move to rectify this. Do ya have any ideas?     Cheers man
    • Well I recently changed my rear axles and was thinking if I bumped anything, I have been driving the car for a while now though... But it has been raining today so everything is wet under the wheel arches. Brakes feel fine and can't hear any of the metal screamers, I had a squeak coming from one of the handbrake drums but that seems to have gone away a while ago. I was going down a hill when it lit up and I did feel the abs bite for a second and question why it did it?
    • Correct. Um. I dunno. I haven't cared enough about the way that the NA cars work to know for sure. But..... The 33/34 turbo manual cars have an electronic speed sensor in the gearbox that outputs a +/- (ie, sawtooth AC) voltage signal. That is connected to the speedo. The speedo then outputs a 0-5v square wave (ie, PWM) signal that the ECU (and any other CU on the bus) sees. The speed sensor is NOT directly connected to the ECU. So here's the problem. Your new ECU expects to see the PWM signal, but must somehow be getting a direct signal from the diff speed sensor. Which would suggest that the wiring of the NA car is not the same as the turbo cars. I think you will need to spend some time with (hopefully the wiring diagram for the car) and a multimeter to see what is connected to what. Then, presuming I am correct**, you would then want to separate the ECU speed signal input from the rest of the car's wiring, and probably either buy a speed signal converter, or build one using an arduino (or similar). That would take in the speed sensor signal and output a scaled (and suitably rearranged) signal for the ECU. ** We shouldn't presume that I am correct here, because there might be something else crazy going on. I don't think you could convert the speedo to be fed from the gearbox sensor, because the pulse rate from that sensor is probably different to the diff sensor and then the speedo would read wrongly. And this also wouldn't fix the ECU's problem either, because the ECU doesn't want to see the gearbox signal direct either (assuming that they are all on the same wiring, for some odd NA related reason, see above caveat!) Does this help? Probably not. Can you make it work? Almost certainly. With the above work. You should buy a handheld oscilloscope from Aliexpress so that you can view these signals directly. Connect up the probes and drive the car. Show photos of the screen when drving at known speeds and connected to different places, and we'll see what we can learn about it.
×
×
  • Create New...