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ND0.9 Foil for Aurora 315mm


Aurora 420mm Flat Field


ND1.2 Foil for Aurora 420mm


ND0.9 Foil for Aurora 420mm


Gemini 180mm Snap-Cap with 155mm Flat Field


Gemini 250mm Snap-Cap with 225mm Flat Field


Gemini 350mm Snap-Cap with 320mm Flat Field


Gemini 450mm Snap-Cap with 420mm Flat Field


JJC TM-A (Canon) Multi Function Timer Remote - TO CLEAR


JJC TM-B (Nikon) Multi Function Timer Remote - TO CLEAR


11 - 20 of 39 results

ND0.9 Foil for Aurora 315mm

In stock
can be shipped within 5-7 days

£16.00
Price includes VAT, plus delivery


 

ND Foil for Aurora Flat Field at astrograph.net

 

ND Foil for Aurora Flat Field Panels

To obtain the correct brightness level from the Aurora flat field with certain telescopes it may be necessary to add a neutral density foil. This will reduce the light level from the panel to a point where the correct flat field can be obtained. Foils of different values can be combined.

Our recommendation is that telescopes with a focal ration of approx F6 will require an ND1.2 foil. For telescopes with a focal ratio of F4 then we suggest adding an ND0.9 to the ND1.2.

If foils are ordered with an Aurora Flat Field, then we will fit the foil to the filter before delivery. If this is not required, please notify us.

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Aurora 420mm Flat Field

Not in stock

£399.00
Price includes VAT, plus delivery


aurora_flatfield sizes

 

Aurora Flatfield Panels

Enjoy the perfect flat and say hello to a new era in electroluminescence flat field science with the revolutionary Aurora light panel.

The new Aurora Flatfield Panel is an advancement in the well known technology of EF flat field foils. Taking into account the huge demand from all over the world, this new product line was especially designed to match the needs of astrophotography. The Aurora Flatfield Panel is a new light source technology for taking flat field images for use in calibration with digital images. It consists of a thin electroluminescent foil which emits an even, gentle white light after an external voltage is applied to it.  For more technical explanation on electroluminescence, please refer to the Wikipedia page about Electroluminescence.

 

Some benefits of the Aurora Flatfield Panel over other flat field light devices

An evenly illuminated surface

A broad, continuous spectrum which may be used with emission line filters 

Lightweight and easy to handle inverter for 12V and 110/240V available - suited to both stationary and mobile use. 

 

Example Applications of this technology by some of our customers:

Gahberg Observatory (Austria), Flats for Astrophotography

Lothar Schanne (Germany), Flats for Spectroscopy

Christoph Schaefer, Flatfield for a 16"/42cm Keller/ASA Cassegrain

Please read the short report about the Aurora foils here [PDF, 76KB] which was published in Nov 2010 issue of Astronomy Technology Today.

 

Description

The Aurora Flatfield Panels are mounted in a rigid frame consisting of virtually unbreakable plastic with an extra protection around the edge so your Aurora is very well protected during transport and travel. The opaque front plate gives you a more uniform brightness than the EL material alone. For very fast optical systems, you will likely need to reduce the brightness by placing some sheets of paper in front of the EL sheet and the frame of the Aurora will keep them secure.

 

Sizes

The Aurora’s are round in shape – perfect for telescope tubes and the diameters are matched to fit the popular sizes of amateur telescopes. The following sizes are available:

D 100mm (for Instruments up to 4")

D 160mm (for Instruments up to 6")

D 220mm (for Instruments up to 8")

D 315mm (for Instruments up to 12")

D 420mm (for Instruments up to 16")

Larger Aurora Flatfield Panels up to 60cm are possible upon request. Special custom made foils up to 1.1m diameter are possible also. (Upon special request, please send us an email)

 

Selecting the right size for your setup

To get high quality flat field data you have to select the right size of Aurora. The clear diameter of your instrument has to be fully covered. The diameter of the dew sheild is not important,

Example: For a 6" (15cm) refractor a 160mm Aurora is the right choice, no matter if the dew shield is larger, but you will have to make sure that the Aurora is precisely centred on the scope.

If you use a Newtonian, Cassegrain, RC, ODK or similar, the Aurora has to be LARGER than the clear diameter of the optic. As a rule of thumb, the Aurora has to cover the clear diameter of the mirror plus the diagonal of the sensor used inside your camera.

Example: If you use a 8" (204mm) Newtonian telescope, the 220 Aurora is sufficient if you have a camera with a quite small sensor (<14mm diagonal). If you use a typical DSLR with an ASP-C sized sensor you will have to select an Aurora one size larger.

It is no problem using a large Aurora with a small telescope. If you do have a 315mm Aurora it will work fine with a 4" refractor or a camera lens

 

Colour

The light emanating from the Aurora Flatfield Panels is slightly bluish-white. Most panels from other suppliers seem to provide pure white light (as perceived by the human eye) but the light is in fact made of discrete emission lines. Due to this, the flat field EL panels from most other suppliers are not suitable for narrowband emission line filters. We have tested the products of all EL sheet manufacturers worldwide and selected these particular EL foils for our Aurora Flatfield Panels because they are the best for astronomical applications. The spectrum of the Aurora Flatfield Panels is not made of some emission lines. Intstead, the EL material used in the Aurora Flatfield Panel has a very broad, continuous emission across the whole spectrum. This fact is what makes our Aurora Flatfield Panels great for narrowband emission line filters. The three spectra below illustrate the difference between our continuous spectrum EL panels and typical EL panels with light generated with discrete emission lines present.

 

bad_foil

 

Spectrum of a bad foil (but still looks white the the human eye!)

 

good_foil

 

Spectrum of a good foil (EF Foil)

 

aurora_perfect_foil

 

Spectrum of a Aurora foil (perfect!)

 

You can see the very broad emission of the new Aurora Flatfield Panel which is very well suited for the work with DSLR and cooled CCD cameras, working with broadband or RGB filters and for work with narrow band emission line filters as well..

 

Brightness

The brightness of the Aurora Flatfield Panel is matched to work best with typical light intensity levels produced after passing through filters. If you are working with light from the whole spectrum, such as when using no filter or only a UV+IR blocked Luminance filter, you will likely have to the reduce the brightness of the panel. The brightness can be controlled electronically to some extent by reducing the input voltage of the inverter (12V inverter only). If the panel is still too bright for your setup, as may be the case with fast instruments and/or very light sensitive cameras, you should consider putting one or more sheets of paper into the frame between the layer of white plexi-glass and the EL material. For very fast optical systems and/or large cameras with slow shutters, the brightness of the Aurora has to be reduced effectively. To that end,  we offer neutral density / grey filters foils in corresponding sizes to be placed inside the frame of the Aurora panels. For customers with fast Astrographs and/or very sensitive cameras we do recommend getting one or two of the foils. The brightness is very even across the whole surface and it works well for the most critical imaging applications, even photometry or spectroscopy (see application links above).

 

Power

The Aurora Flatfield Panels packages include a compatible inverter. (Standard AC adaptors won't work.) The panel is illuminated by the external high voltage produced by the inverter. This high voltage, however, is produced at very low amperage, so there is no  risk of electric shock.

IMPORTANT: Please use the Aurora Flatfield Panels with the supplied matching inverter only. Connecting a panel to an inverter of the wrong size reduces the lifetime of the unit. There are 12V inverters for all sizes of Aurora Flatfield Panels and for the large size units there are also 110/230V inverters available.

We supply all panels with a DC 'Cigar Lighter' type power lead to the 3.5mm DC jack of the inverter. This allows you to power the panel from DC battery / power packs as commonly used with mounts etc.

 

What you get

Your Aurora Flatfield Panel is shipped as a ready-to-use set consisting of the mounted EL substrate, the matching inverter, all cables and a printed manual.

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Prices includes VAT, plus delivery

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ND1.2 Foil for Aurora 420mm

Not in stock

£22.00
Price includes VAT, plus delivery


 

ND Foil for Aurora Flat Field at astrograph.net

 

ND Foil for Aurora Flat Field Panels

To obtain the correct brightness level from the Aurora flat field with certain telescopes it may be necessary to add a neutral density foil. This will reduce the light level from the panel to a point where the correct flat field can be obtained. Foils of different values can be combined.

Our recommendation is that telescopes with a focal ration of approx F6 will require an ND1.2 foil. For telescopes with a focal ratio of F4 then we suggest adding an ND0.9 to the ND1.2.

If foils are ordered with an Aurora Flat Field, then we will fit the foil to the filter before delivery. If this is not required, please notify us.

Customers who bought this product also bought

*
Prices includes VAT, plus delivery

Browse this category: Imaging Accessories

ND0.9 Foil for Aurora 420mm

Not in stock

£22.00
Price includes VAT, plus delivery


 

ND Foil for Aurora Flat Field at astrograph.net

 

ND Foil for Aurora Flat Field Panels

To obtain the correct brightness level from the Aurora flat field with certain telescopes it may be necessary to add a neutral density foil. This will reduce the light level from the panel to a point where the correct flat field can be obtained. Foils of different values can be combined.

Our recommendation is that telescopes with a focal ration of approx F6 will require an ND1.2 foil. For telescopes with a focal ratio of F4 then we suggest adding an ND0.9 to the ND1.2.

If foils are ordered with an Aurora Flat Field, then we will fit the foil to the filter before delivery. If this is not required, please notify us.

Browse this category: Imaging Accessories

Gemini 180mm Snap-Cap with 155mm Flat Field

In stock
can be shipped within 1-2 days

£509.00
Price includes VAT, plus delivery


The Snap-Cap is an invaluable accessory for use in an observatory where the telescope is to be left unattended. The Snap-Cap serves as both a motorised dew cap shield, essential for keeping dust of optics when the telescope is unused, and also a flat field. In remote applications there is a need to take flat fields and update them over time. Ideally the flat field covers the front of the OTA, but how are you to do this remotely? The answer is Snap-Cap. In addition to protecting the telescope it also provides a flat field!

App

App

The Snap-Cap mounts to your telescopes tube or dew shield via a metal support which is held in place via a non-marking steel strap. The Snap-Cap is then supplied with an Arduino based controller for controlling its operation. This allows control via USB or Bluetooth. The supplied cable connects to the Snap-Cap motor and also the Invertor for the flat field, providing it with power. The SNap-Cap is powered with 12V DC. No more than 2A is required even for the largest panel with the motor running simultaneuosly.

The supplied software is ASCOM compliant and the Snap-Cap has native support in Sequence Generator Pro (SGP). The flat field can be adjusted for brightness so no ND filters are required.

The Snap-Cap cover is constructed from Carbon Fibre. This can be offered in custom sizes for an additional £15 surcharge. Please contact us for details. NOTE: While the cover can be made in a custom size, the size of the flat panel is fixed!

As standard the Snap-Cap with 155mm Flat Panel has a diameter of 180mm

Browse these categories as well: Imaging Accessories, Observatory Automation

Gemini 250mm Snap-Cap with 225mm Flat Field


can be shipped within 10-14 days

£649.00
Price includes VAT, plus delivery


The Snap-Cap is an invaluable accessory for use in an observatory where the telescope is to be left unattended. The Snap-Cap serves as both a motorised dew cap shield, essential for keeping dust of optics when the telescope is unused, and also a flat field. In remote applications there is a need to take flat fields and update them over time. Ideally the flat field covers the front of the OTA, but how are you to do this remotely? The answer is Snap-Cap. In addition to protecting the telescope it also provides a flat field!

App

App

The Snap-Cap mounts to your telescopes tube or dew shield via a metal support which is held in place via a non-marking steel strap. The Snap-Cap is then supplied with an Arduino based controller for controlling its operation. This allows control via USB or Bluetooth. The supplied cable connects to the Snap-Cap motor and also the Invertor for the flat field, providing it with power. The SNap-Cap is powered with 12V DC. No more than 2A is required even for the largest panel with the motor running simultaneuosly.

The supplied software is ASCOM compliant and the Snap-Cap has native support in Sequence Generator Pro (SGP). The flat field can be adjusted for brightness so no ND filters are required.

The Snap-Cap cover is constructed from Carbon Fibre. This can be offered in custom sizes for an additional £15 surcharge. Please contact us for details. NOTE: While the cover can be made in a custom size, the size of the flat panel is fixed!

As standard the Snap-Cap with 225mm Flat Panel has a diameter of 250mm

Browse these categories as well: Imaging Accessories, Observatory Automation

Gemini 350mm Snap-Cap with 320mm Flat Field


can be shipped within 10-14 days

£749.00
Price includes VAT, plus delivery


The Snap-Cap is an invaluable accessory for use in an observatory where the telescope is to be left unattended. The Snap-Cap serves as both a motorised dew cap shield, essential for keeping dust of optics when the telescope is unused, and also a flat field. In remote applications there is a need to take flat fields and update them over time. Ideally the flat field covers the front of the OTA, but how are you to do this remotely? The answer is Snap-Cap. In addition to protecting the telescope it also provides a flat field!

App

App

The Snap-Cap mounts to your telescopes tube or dew shield via a metal support which is held in place via a non-marking steel strap. The Snap-Cap is then supplied with an Arduino based controller for controlling its operation. This allows control via USB or Bluetooth. The supplied cable connects to the Snap-Cap motor and also the Invertor for the flat field, providing it with power. The SNap-Cap is powered with 12V DC. No more than 2A is required even for the largest panel with the motor running simultaneuosly.

The supplied software is ASCOM compliant and the Snap-Cap has native support in Sequence Generator Pro (SGP). The flat field can be adjusted for brightness so no ND filters are required.

The Snap-Cap cover is constructed from Carbon Fibre. This can be offered in custom sizes for an additional £15 surcharge. Please contact us for details. NOTE: While the cover can be made in a custom size, the size of the flat panel is fixed!

As standard the Snap-Cap with 320mm Flat Panel has a diameter of 350mm

Browse these categories as well: Imaging Accessories, Observatory Automation

Gemini 450mm Snap-Cap with 420mm Flat Field


can be shipped within 10-14 days

£899.00
Price includes VAT, plus delivery


The Snap-Cap is an invaluable accessory for use in an observatory where the telescope is to be left unattended. The Snap-Cap serves as both a motorised dew cap shield, essential for keeping dust of optics when the telescope is unused, and also a flat field. In remote applications there is a need to take flat fields and update them over time. Ideally the flat field covers the front of the OTA, but how are you to do this remotely? The answer is Snap-Cap. In addition to protecting the telescope it also provides a flat field!

App

App

The Snap-Cap mounts to your telescopes tube or dew shield via a metal support which is held in place via a non-marking steel strap. The Snap-Cap is then supplied with an Arduino based controller for controlling its operation. This allows control via USB or Bluetooth. The supplied cable connects to the Snap-Cap motor and also the Invertor for the flat field, providing it with power. The SNap-Cap is powered with 12V DC. No more than 2A is required even for the largest panel with the motor running simultaneuosly.

The supplied software is ASCOM compliant and the Snap-Cap has native support in Sequence Generator Pro (SGP). The flat field can be adjusted for brightness so no ND filters are required.

The Snap-Cap cover is constructed from Carbon Fibre. This can be offered in custom sizes for an additional £15 surcharge. Please contact us for details. NOTE: While the cover can be made in a custom size, the size of the flat panel is fixed!

As standard the Snap-Cap with 420mm Flat Panel has a diameter of 450mm

Browse these categories as well: Imaging Accessories, Observatory Automation

JJC TM-A (Canon) Multi Function Timer Remote - TO CLEAR

In stock
can be shipped within 1-2 days

Normal Price £34.00
£20.00
You save £14.00
Price includes VAT, plus delivery


The JJC TM-A Multi-Function Timer remote control provides a simple trigger function and can activate the bulb function on cameras. It also functions as a timer remote and can be programmed to function as an intervalometer.

TM-A Multi-Function Timer Features

Remote control with an 90cm cord and a self-timer, interval timer, long-exposure timer, and exposure-count setting feature.

Timer can be set anywhere from 1 sec. to 99 hrs., 59 min., 59 sec.

Maximum number of exposure is 399.

Uses 2 x AAA batteries (supplied). Will run for up to 2 wks on one set of batteries!

Compatible with the following cameras

CANON EOS 5D / EOS 1D / EOS 1D Mark II / EOS 1Ds / EOS 1Ds Mark II /  EOS 30D / EOS 20D / EOS 10D / EOS D60 / EOS D30 / EOS 40D / EOS 5D / EOS 1V / EOS 3 / EOS D2000 / EOS 1D Mark III / EOS 50D / EOS 5D Mark II / EOS 7D / EOS 1D Mark IV

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JJC TM-B (Nikon) Multi Function Timer Remote - TO CLEAR

In stock
can be shipped within 1-2 days

Normal Price £34.00
£20.00
You save £14.00
Price includes VAT, plus delivery


The JJC TM-B Multi-Function Timer remote control provides a simple trigger function and can activate the bulb function on cameras. It also functions as a timer remote and can be programmed to function as an intervalometer.

TM-B Multi-Function Timer Features

Remote control with an 90cm cord and a self-timer, interval timer, long-exposure timer, and exposure-count setting feature.

Timer can be set anywhere from 1 sec. to 99 hrs., 59 min., 59 sec.

Maximum number of exposure is 399.

Uses 2 x AAA batteries (supplied). Will run for up to 2 wks on one set of batteries!

Compatible with the following cameras

NIKON D2H / D1x / D1h / D1 / D2x / *D100 / D200 / F5 / D2Xs / D3 / D300 / D700 / F6 / F100 / F90 / F90x / D3x / D300s / D3s

KODAK DCS-14n

FUJIFILM Finepix S3pro / Finepix S5pro

 

*via D100 Vertical Battery Pack

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11 - 20 of 39 results