IDAS NB3 Dual Band SII & OIII Nebula Booster Filter - 2" Mounted
Availability: Item has been discontinued by the manufacturer
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IDAS NB3-PM: PM stands for Passband Modification
Neubla Booster NB3-PM filter for OIII and SII
The NB3 is a nebula booster filter that transfers OIII and SII emission lines. The NB3 is a thin-film interference filter having a half-value transmittance band width of about 21nm at the shorter wave length side and about 19nm at the longer wave length side.
Optical properties:
The NB3 cannot cut the IR range longer than 750nm, so it is highly recommended you use it in combination with an IDAS light pollution filter or an HEUIB-II filter as the base filter. You can swap the base filter as well to expand your shooting expressions.
| Intimacy | Base Filter | NBx-PM or ODW | Transfers |
| *** | LPS-D3 (NGS1) | NB2-PM | OIII, H-alpha, NiiI |
| NB3-PM | OIII, SII | ||
| ODW | same as LPS-D3 | ||
| ** | LPS-D2 | NB2-PM | OIII, H-alpha, NII |
| NB3-PM | OIII, SII | ||
| ODW | same as LPS-D2 | ||
| * | HEUIB-II | NB2-PM | OIII, H-alpha, NIII |
| NB3-PM | OIII | ||
| ODW | same as HEUIB-II | ||
| * | LPS-D1 | NB2-PM | OIII, H-alpha, NII |
| NB3-PM | OIII | ||
| ODW | same as LPS-D1 | ||
| * | NB1 | NB2-PM | OIII, H-alpha, NII |
| NB3-PM | OIII | ||
| ODW | same as NB1 | ||
| The more the number of "*" is, the less ghosts will be likely borne between the two filters. | |||
Note 1
The transmittance range is intentionally shifted to the longer wave length side. allowing margins for "the shift tendency towards the shorter wave length side against oblique incidences" typically associated with thin-film interference filters.The NB3-PM can almost fully transfer the abovementioned nebular emission lines under the conditions, for example, where the incidence of the parallel flux is kept below 14 degrees, or a lens of the F value 2 or faster (or 1.4 or faster depending on lens) is used before this filter.
Note 2
The NB3-PM filter utilizes the IGAD (ion-Gun AssistDeposition) coating technology which has been applied to our regular LPS-P2 and LPS-V4 series. The IGAD technology densifies the multi-layers - the heart of interference filters - resulting in the physical properties that cannot be obtained from the conventional multi-layers.
- Highly durable thin layers of which hardness equals to quartz glasses. Tremendously improved adherence between the substrate and the multi-layers set.
- Absolutely almost no aging variation in optical spectral characteristics due to temperature and humidity change as far as used in the regular human living environments.
Specifications:
- M48 x 0.75
- Filter thickness: 2.5mm
- Lightweight frame
| Product Banner Type | discontinued |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |
IDAS NB3-PM: PM stands for Passband Modification
Neubla Booster NB3-PM filter for OIII and SII
The NB3 is a nebula booster filter that transfers OIII and SII emission lines. The NB3 is a thin-film interference filter having a half-value transmittance band width of about 21nm at the shorter wave length side and about 19nm at the longer wave length side.
Optical properties:
The NB3 cannot cut the IR range longer than 750nm, so it is highly recommended you use it in combination with an IDAS light pollution filter or an HEUIB-II filter as the base filter. You can swap the base filter as well to expand your shooting expressions.
| Intimacy | Base Filter | NBx-PM or ODW | Transfers |
| *** | LPS-D3 (NGS1) | NB2-PM | OIII, H-alpha, NiiI |
| NB3-PM | OIII, SII | ||
| ODW | same as LPS-D3 | ||
| ** | LPS-D2 | NB2-PM | OIII, H-alpha, NII |
| NB3-PM | OIII, SII | ||
| ODW | same as LPS-D2 | ||
| * | HEUIB-II | NB2-PM | OIII, H-alpha, NIII |
| NB3-PM | OIII | ||
| ODW | same as HEUIB-II | ||
| * | LPS-D1 | NB2-PM | OIII, H-alpha, NII |
| NB3-PM | OIII | ||
| ODW | same as LPS-D1 | ||
| * | NB1 | NB2-PM | OIII, H-alpha, NII |
| NB3-PM | OIII | ||
| ODW | same as NB1 | ||
| The more the number of "*" is, the less ghosts will be likely borne between the two filters. | |||
Note 1
The transmittance range is intentionally shifted to the longer wave length side. allowing margins for "the shift tendency towards the shorter wave length side against oblique incidences" typically associated with thin-film interference filters.The NB3-PM can almost fully transfer the abovementioned nebular emission lines under the conditions, for example, where the incidence of the parallel flux is kept below 14 degrees, or a lens of the F value 2 or faster (or 1.4 or faster depending on lens) is used before this filter.
Note 2
The NB3-PM filter utilizes the IGAD (ion-Gun AssistDeposition) coating technology which has been applied to our regular LPS-P2 and LPS-V4 series. The IGAD technology densifies the multi-layers - the heart of interference filters - resulting in the physical properties that cannot be obtained from the conventional multi-layers.
- Highly durable thin layers of which hardness equals to quartz glasses. Tremendously improved adherence between the substrate and the multi-layers set.
- Absolutely almost no aging variation in optical spectral characteristics due to temperature and humidity change as far as used in the regular human living environments.
Specifications:
- M48 x 0.75
- Filter thickness: 2.5mm
- Lightweight frame
| Product Banner Type | discontinued |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Hide Found a better Shipped Price on Frontend? | No |