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Adam J last won the day on January 30 2020
Adam J had the most liked content!
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I can't believe I did thisto myself... £600 brick lens :/
Adam J replied to pipnina's topic in The Astro Lounge
One of these adaptors from Astromechanics would solve your problem. Astromechanics You might be able to find one that is in someones old stock, I know FLO used to sell them. Apart from that it may be a problem importing. Maybe a wanted notice in the forum and on Astrobuysell uk. Adam -
Given it's a current gen camera it would have to be over it's used price for it to be uneconomical. So that's probably anything upto and including £800 ish I would say. I really really doubt it will be that much. Adam
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You don't actually need the 12volt regulator for the LiFePO4 but you do if you want to be able to use other types of batteries and higher voltage power supplies and I think it adds a layer of protection to what is expensive equipment. SO with the regulator for example you could use a 4 Cell LIPO battery if you wanted or a 24volt leisure battery. or a 16volt power supply or even a 9 volt battery, it would all end up at 12.2volts. You charge it by connecting both batteries to the box and then the charger to the third XT60 connector. Then you can charge both batteries at the same time. Adam
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Opinions - New Askar 103mm APO triplet
Adam J replied to Elp's topic in Discussions - Scopes / Whole setups
The FSQ is a totally different optical design to this scope the effects of collimation errors are different. The issue with the FSQ85 is that it was never optically designed to cope with modern small pixel cameras., Unfortunately what your seeing here is quite typical. of this. -
Small kit to take on holidays?
Adam J replied to Grumman's topic in Discussions - Scopes / Whole setups
A friend already contacted them with exactly that question, you still need the handset. I would not let that put you off too much though. Adam -
Small kit to take on holidays?
Adam J replied to Grumman's topic in Discussions - Scopes / Whole setups
The HEM15 is the better match for travel its just lighter. The AM3 is not really that much lighter than the AM5. But honestly the SW GTI will carry what you are looking at just fine. Adam -
Box: https://www.amazon.co.uk/gp/product/B07F9S5W2R/ref=ox_sc_act_title_3?smid=A1A6WWKJ95BCLL&psc=1 Battery Monitor: DC 12V 24V 36V 48V 60V 72V 84V Battery Meter with Alarm, Front Setting and Switch Key, Battery Capacity Voltage Indicator Battery Gauge Monitors -Acid and Lithium ion Battery Indicator (Green) : Amazon.co.uk: Electronics & Photo XT60 Connectors: Nuofany 5Pairs XT60E-F Female Plug XT60h XT60 Male Bullet Connector Wire Cable Plug for RC FPV Lipo Battery RC Quadcopter : Amazon.co.uk: Toys & Games 5volt regulator: Voltage Converter - DC 12V to 5V Step Down Buck Converter Regulator with Female Mount Panel +USB Socket for Car Audio,Radio,Monitor,LED (IP67 Waterproof) : Amazon.co.uk: Electronics & Photo 12volt regulator: DROK DC-DC Stabilizer, 9V-36V to 12V Boost Buck Converter 5A 60W Waterproof Auto Step Up Down Voltage Regulator 12V Volt Transformer for Car Audio Solar Power System LCD Television LED Display Screen: Amazon.co.uk: Electronics & Photo Similar switches: https://www.amazon.co.uk/gp/product/B0BD39FPRQ/ref=ox_sc_act_title_2?smid=A1DPAY3BCHO71J&psc=1 Could not find the same output voltage monitor but this would work: CNLW DC 5-100V LED Digital Display Round Two-wire Voltmeter DC Digital Car Voltage Current Meter Volt Detector Tester Monitor Pane (Red) : Amazon.co.uk: DIY & Tools 5.5/2.1 connectors: YIXISI 5.5 x 2.1mm DC Power Connector Kit, 5 PCS DC-099 Jack Socket Threaded Female Adapter with Cable, 5 PCS DC Power Male Pigtail Wire, with Waterproof Cap: Amazon.co.uk: Electronics & Photo Batteries: ECO-WORTHY 12V 8Ah Rechargeable LiFePO4 Lithium Iron Phosphate Battery with Over 3000 Times Deep Cycle for Fish finder,Ride on Car,Emergency Ham Radio,Burglar Alarm System,Kid Scooter,Solar Panel: Amazon.co.uk: Business, Industry & Science Charger: ISDT Q6 Nano Lipo Charger,DC 200W Smart Digital Charger for RC Batteries,Universal Balance Discharge Charger for LiFe/Lilon/LiPo/LiHV (1-6S),NiMH/Cd (1-16S),Pb (1-12S) Batteries: Amazon.co.uk: Toys & Games Use LIFe mode So allot of this I already have and sometimes you get this stuff cheaper on ebay selling single items while most of this is bulk buy. SO the cost is more than I paid. You need to shop about a bit. You can fit it all in the box i used, but you will have an easier time if you go a size larger I think. Adam
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Rate my flats..
Adam J replied to paul mc c's topic in Imaging - Image Processing, Help and Techniques
I think there would be benefit in blowing the dust off your camera / filters. But that is not because the flats are not working looks like they are, Its more because you dont want the situation when dust moves during a project and then your flats will not work. Adam -
Its not really got amp glow and even if it did I would not see this as a reason not to choose it, just use calibration frames to remove it. Your choice if between a larger sensor yielding a larger field of view or a smaller sensor yielding better sensitivity. However, if you have to take more than one frame to cover any given target it will demolish any sensitivity advantage of the 533. SO the only question you should ask yourself is can i cover the targets I want to image with the 533 using my intended scope. Adam
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Its 1e vs 1.2e at the kind of gain you would use for short exposures using HCG mode... However, ZWO have not used the lowest read noise mode (HDR mode) of the 585 chip....that would have allowed the read noise to drop to 0.5e-0.65e, I don't know why they have not done it?? So like the mode used by the Altair Hypercam version. https://www.altairastro.com/altair-hypercam-585c-colour-fan-cooled-usb3-astronomy-camera-13481-p.asp IN terms of QE I think you are comparing relative response on the 533 and actual QE on the 585 so they are actually very different. Adam
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Unfortunately pure alcohol has very low surface tension and so it flows really easy around things in a thin film in comparison to water.
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The Jellyfish Nebula - artistic non-OIII version (24.6 hrs)
Adam J replied to AstroGS's topic in Imaging - Deep Sky
Doesn't have to be the case, the AR coating is not a single layer but a stack of layers that are optimised for different wavelength ranges. It is entirely possible (depending on quality control) for one of those layers to be messed up and the others to still work. However, until disproved with a different filter the OIII being defective remains the most likely issue. The most likely issue with the filter itself is that it is not cutting IR effectively and allowing light to pass in the IR that is potentially outside of the wavelength range covered by the sensor AR coating and so those micro lens diffraction patterns are generated by IR as opposed to the OIII part of the spectrum....not that it matters why in the end. I say this as the its happening on even less bright stars yet at the same time the OIII line is still clearly well filtered given the signal you still gathered. Like I say just a theory to match the observed effects. Adam -
I feel i know what has happened here..... They should not have gotten you to clean it yourself. When you cleaned it am guessing you used alcohol and unfortunately alcohol and glue don't play nicely together, you basically dissolved the glue with alcohol. I view this as their fault though as they clearly did not give you sufficient instruction in how to clean the mirror. You can actually see on your picture of the pad how the alcohol has seeped in around the edges leaving a small untouched patch of glue in the centre of the adhesive pad. Adam